GitHub/moto-9609/android_kernel_motorola_exynos9610.git
8 years agoath10k: wmi-alloc-chunk should use DMA_BIDIRECTIONAL
Ben Greear [Tue, 29 Nov 2016 22:00:28 +0000 (14:00 -0800)]
ath10k: wmi-alloc-chunk should use DMA_BIDIRECTIONAL

These memory chunks are often used as 'swap' by the NIC,
so it will be both reading and writing to these areas.

This seems to fix errors like this on my x86-64 machine:

kernel: DMAR: DMAR:[DMA Write] Request device [05:00.0] fault addr ff5de000
        DMAR:[fault reason 05] PTE Write access is not set

Tested-by: Marek Behun <kabel@blackhole.sk>
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix Tx DMA alloc failure during continuous wifi down/up
Mohammed Shafi Shajakhan [Wed, 30 Nov 2016 09:50:14 +0000 (15:20 +0530)]
ath10k: fix Tx DMA alloc failure during continuous wifi down/up

With maximum number of vap's configured in a two radio supported
systems of ~256 Mb RAM, doing a continuous wifi down/up and
intermittent traffic streaming from the connected stations results
in failure to allocate contiguous memory for tx buffers. This results
in the disappearance of all VAP's and a manual reboot is needed as
this is not a crash (or) OOM(for OOM killer to be invoked). To address
this allocate contiguous memory for tx buffers one time and re-use them
until the modules are unloaded but this results in a slight increase in
memory footprint of ath10k when the wifi is down, but the modules are
still loaded. Also as of now we use a separate bool 'tx_mem_allocated'
to keep track of the one time memory allocation, as we cannot come up
with something like 'ath10k_tx_{register,unregister}' before
'ath10k_probe_fw' is called as 'ath10k_htt_tx_alloc_cont_frag_desc'
memory allocation is dependent on the hw_param 'continuous_frag_desc'

a) memory footprint of ath10k without the change

lsmod | grep ath10k
ath10k_core           414498  1 ath10k_pci
ath10k_pci             38236  0

b) memory footprint of ath10k with the change

ath10k_core           414980  1 ath10k_pci
ath10k_pci             38236  0

Memory Failure Call trace:

hostapd: page allocation failure: order:6, mode:0xd0
 [<c021f150>] (__dma_alloc_buffer.isra.23) from
[<c021f23c>] (__alloc_remap_buffer.isra.26+0x14/0xb8)
[<c021f23c>] (__alloc_remap_buffer.isra.26) from
[<c021f664>] (__dma_alloc+0x224/0x2b8)
[<c021f664>] (__dma_alloc) from [<c021f810>]
(arm_dma_alloc+0x84/0x90)
[<c021f810>] (arm_dma_alloc) from [<bf954764>]
(ath10k_htt_tx_alloc+0xe0/0x2e4 [ath10k_core])
[<bf954764>] (ath10k_htt_tx_alloc [ath10k_core]) from
[<bf94e6ac>] (ath10k_core_start+0x538/0xcf8 [ath10k_core])
[<bf94e6ac>] (ath10k_core_start [ath10k_core]) from
[<bf947eec>] (ath10k_start+0xbc/0x56c [ath10k_core])
[<bf947eec>] (ath10k_start [ath10k_core]) from
[<bf8a7a04>] (drv_start+0x40/0x5c [mac80211])
[<bf8a7a04>] (drv_start [mac80211]) from [<bf8b7cf8>]
(ieee80211_do_open+0x170/0x82c [mac80211])
[<bf8b7cf8>] (ieee80211_do_open [mac80211]) from
[<c056afc8>] (__dev_open+0xa0/0xf4)
[21053.491752] Normal: 641*4kB (UEMR) 505*8kB (UEMR) 330*16kB (UEMR)
126*32kB (UEMR) 762*64kB (UEMR) 237*128kB (UEMR) 1*256kB (M) 0*512kB
0*1024kB 0*2048kB 0*4096kB = 95276kB

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix soft lockup during firmware crash/hw-restart
Mohammed Shafi Shajakhan [Wed, 30 Nov 2016 05:29:29 +0000 (10:59 +0530)]
ath10k: fix soft lockup during firmware crash/hw-restart

During firmware crash (or) user requested manual restart
the system gets into a soft lock up state because of the
below root cause.

During user requested hardware restart / firmware crash
the system goes into a soft lockup state as 'napi_synchronize'
is called after 'napi_disable' (which sets 'NAPI_STATE_SCHED'
bit) and it sleeps into infinite loop as it waits for
'NAPI_STATE_SCHED' to be cleared. This condition is hit because
'ath10k_hif_stop' is called twice as below (resulting in calling
'napi_synchronize' after 'napi_disable')

'ath10k_core_restart' -> 'ath10k_hif_stop' (ATH10K_STATE_ON) ->
-> 'ieee80211_restart_hw' -> 'ath10k_start' -> 'ath10k_halt' ->
'ath10k_core_stop' -> 'ath10k_hif_stop' (ATH10K_STATE_RESTARTING)

Fix this by calling 'ath10k_halt' in ath10k_core_restart itself
as it makes more sense before informing mac80211 to restart h/w
Also remove 'ath10k_halt' in ath10k_start for the state of 'restarting'

Fixes: 3c97f5de1f28 ("ath10k: implement NAPI support")
Cc: <stable@vger.kernel.org> # v4.9
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix TLV set regdomain command
Erik Stromdahl [Sun, 27 Nov 2016 19:37:20 +0000 (20:37 +0100)]
ath10k: fix TLV set regdomain command

There is a typo bug in the current implementation of
ath10k_wmi_tlv_op_gen_pdev_set_rd.
The conformance test limits are not set up properly.

The two arguments ctl2g and ctl5g were not used at all.
Instead, the regdomain arguments rd2g and rd5g were used
for the ctl settings as well.

Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: feed only active spectral / dfs-detector
Zefir Kurtisi [Fri, 25 Nov 2016 15:51:58 +0000 (17:51 +0200)]
ath9k: feed only active spectral / dfs-detector

Radar pulse and spectral scan reports are provided by the HW
with the ATH9K_RXERR_PHY flag set. Those are forwarded to
the dfs-detector and spectral module for further processing.

For some older chips, the pre-conditions checked in those
modules are ambiguous, since ATH9K_PHYERR_RADAR is used to
tag both types. As a result, spectral frames are fed into
the dfs-detector and vice versa.

This could lead to a false radar detection on a non-DFS
channel (which is uncritical), but more relevant it causes
useless CPU load for processing invalid frames.

This commit ensures that the dfs-detector and spectral
collector are only fed when they are active.

Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix monitor vdev for receiving other bss frames
Manoharan, Rajkumar [Wed, 23 Nov 2016 14:58:11 +0000 (16:58 +0200)]
ath10k: fix monitor vdev for receiving other bss frames

In order to receive other BSS entries in mesh mode, Monitor vdev
is created whenever filter flag is set with OTHER_BSS. Recently
it is root caused that setting promisc filter for Mesh interface
is causing performance and stability issues. To fix this issue,
firmware will configure appropriate rxfilters by default for mesh
vdev during vdev creation. This change fixes monitor vdev creation
based on firmware IE

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: add support for per sta tx bitrate
Anilkumar Kolli [Wed, 23 Nov 2016 14:58:11 +0000 (16:58 +0200)]
ath10k: add support for per sta tx bitrate

Per STA tx bitrate info is filled from peer stats.
Export per sta txrate info to cfg80211/nl80211

Signed-off-by: Anilkumar Kolli <akolli@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: add per peer htt tx stats support for 10.4
Anilkumar Kolli [Wed, 23 Nov 2016 14:58:10 +0000 (16:58 +0200)]
ath10k: add per peer htt tx stats support for 10.4

Per peer tx stats are part of 'HTT_10_4_T2H_MSG_TYPE_PEER_STATS'
event, Firmware sends one HTT event for every four PPDUs.
HTT payload has success pkts/bytes, failed pkts/bytes, retry
pkts/bytes and rate info per ppdu.
Peer stats are enabled through 'WMI_SERVICE_PEER_STATS',
which are nowadays enabled by default.

Parse peer stats and update the tx rate information per STA.

tx rate, Peer stats are tested on QCA4019 with Firmware version
10.4-3.2.1-00028.

Signed-off-by: Anilkumar Kolli <akolli@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowil6210: support NL80211_ATTR_WIPHY_RETRY_SHORT
Lior David [Wed, 23 Nov 2016 14:06:43 +0000 (16:06 +0200)]
wil6210: support NL80211_ATTR_WIPHY_RETRY_SHORT

Add support for setting retry limit for short frames,
using NL80211_CMD_SET_WIPHY with the attribute
NL80211_ATTR_WIPHY_RETRY_SHORT.
Update wiphy->retry_short from the FW default when interface
is brought up.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowil6210: align to latest auto generated wmi.h
Lior David [Wed, 23 Nov 2016 14:06:42 +0000 (16:06 +0200)]
wil6210: align to latest auto generated wmi.h

Align to latest version of the auto generated wmi file
describing the interface with FW.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowil6210: add support for abort scan
Maya Erez [Wed, 23 Nov 2016 14:06:42 +0000 (16:06 +0200)]
wil6210: add support for abort scan

Implement cfg80211 abort_scan op to allow the upper layer to
abort an ongoing scan request.
In addition, notify wil6210 device on scan abort request instead
of just ignoring the scan response.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowil6210: fix deadlock when using fw_no_recovery option
Lior David [Wed, 23 Nov 2016 14:06:41 +0000 (16:06 +0200)]
wil6210: fix deadlock when using fw_no_recovery option

When FW crashes with no_fw_recovery option, driver
waits for manual recovery with wil->mutex held, this
can easily create deadlocks.
Fix the problem by moving the wait outside the lock.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowil6210: add support for power save enable / disable
Maya Erez [Wed, 23 Nov 2016 14:06:40 +0000 (16:06 +0200)]
wil6210: add support for power save enable / disable

New power management wmi commands provide the ability to change
the device power save profile (enable / disable power save).

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowil6210: fix net queue stop/wake
Dedy Lansky [Wed, 23 Nov 2016 14:06:40 +0000 (16:06 +0200)]
wil6210: fix net queue stop/wake

Driver calls to netif_tx_stop_all_queues/netif_tx_wake_all_queues are
inconsistent. In several cases, driver can get to a situation where net
queues are stopped forever and data cannot be sent.

The fix is to stop net queues if there is at least one vring which is
"full" and to wake net queues if all vrings are not "full".

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: fix NULL pointer dereference
Miaoqing Pan [Wed, 16 Nov 2016 09:23:08 +0000 (17:23 +0800)]
ath9k: fix NULL pointer dereference

relay_open() may return NULL, check the return value to avoid the crash.

BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
IP: [<ffffffffa01a95c5>] ath_cmn_process_fft+0xd5/0x700 [ath9k_common]
PGD 41cf28067 PUD 41be92067 PMD 0
Oops: 0000 [#1] SMP
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.8.6+ #35
Hardware name: Hewlett-Packard h8-1080t/2A86, BIOS 6.15    07/04/2011
task: ffffffff81e0c4c0 task.stack: ffffffff81e00000
RIP: 0010:[<ffffffffa01a95c5>] [<ffffffffa01a95c5>] ath_cmn_process_fft+0xd5/0x700 [ath9k_common]
RSP: 0018:ffff88041f203ca0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 000000000000059f RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffffffff81f0ca98
RBP: ffff88041f203dc8 R08: ffffffffffffffff R09: 00000000000000ff
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff81f0ca98 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88041f200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000040 CR3: 000000041b6ec000 CR4: 00000000000006f0
Stack:
0000000000000363 00000000000003f3 00000000000003f3 00000000000001f9
000000000000049a 0000000001252c04 ffff88041f203e44 ffff880417b4bfd0
0000000000000008 ffff88041785b9c0 0000000000000002 ffff88041613dc60

Call Trace:
<IRQ>
[<ffffffffa01b6441>] ath9k_tasklet+0x1b1/0x220 [ath9k]
[<ffffffff8105d8dd>] tasklet_action+0x4d/0xf0
[<ffffffff8105dde2>] __do_softirq+0x92/0x2a0

Reported-by: Devin Tuchsen <devin.tuchsen@gmail.com>
Tested-by: Devin Tuchsen <devin.tuchsen@gmail.com>
Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: fix ath9k_hw_gpio_get() to return 0 or 1 on success
Matthias Schiffer [Tue, 15 Nov 2016 17:47:21 +0000 (18:47 +0100)]
ath9k: fix ath9k_hw_gpio_get() to return 0 or 1 on success

Commit b2d70d4944c1 ("ath9k: make GPIO API to support both of WMAC and
SOC") refactored ath9k_hw_gpio_get() to support both WMAC and SOC GPIOs,
changing the return on success from 1 to BIT(gpio). This broke some callers
like ath_is_rfkill_set(). This doesn't fix any known bug in mainline at the
moment, but should be fixed anyway.

Instead of fixing all callers, change ath9k_hw_gpio_get() back to only
return 0 or 1.

Fixes: b2d70d4944c1 ("ath9k: make GPIO API to support both of WMAC and SOC")
Cc: <stable@vger.kernel.org> # v4.7+
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
[kvalo@qca.qualcomm.com: mention that doesn't fix any known bug]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: add spectral scan support to wmi-tlv
Michal Kazior [Mon, 14 Nov 2016 13:26:40 +0000 (14:26 +0100)]
ath10k: add spectral scan support to wmi-tlv

Command structure and event flow doesn't seem to
be any different compared to existing
implementation for other firmware branches.

This patch effectively adds in-driver support for
spectral scanning on QCA61x4 and QCA9377.

Tested QCA9377 w/ WLAN.TF.1.0-00267-1.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix null deref on wmi-tlv when trying spectral scan
Michal Kazior [Mon, 14 Nov 2016 13:25:23 +0000 (14:25 +0100)]
ath10k: fix null deref on wmi-tlv when trying spectral scan

WMI ops wrappers did not properly check for null
function pointers for spectral scan. This caused
null dereference crash with WMI-TLV based firmware
which doesn't implement spectral scan.

The crash could be triggered with:

  ip link set dev wlan0 up
  echo background > /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan_ctl

The crash looked like this:

  [  168.031989] BUG: unable to handle kernel NULL pointer dereference at           (null)
  [  168.037406] IP: [<          (null)>]           (null)
  [  168.040395] PGD cdd4067 PUD fa0f067 PMD 0
  [  168.043303] Oops: 0010 [#1] SMP
  [  168.045377] Modules linked in: ath10k_pci(O) ath10k_core(O) ath mac80211 cfg80211 [last unloaded: cfg80211]
  [  168.051560] CPU: 1 PID: 1380 Comm: bash Tainted: G        W  O    4.8.0 #78
  [  168.054336] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
  [  168.059183] task: ffff88000c460c00 task.stack: ffff88000d4bc000
  [  168.061736] RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
  ...
  [  168.100620] Call Trace:
  [  168.101910]  [<ffffffffa03b9566>] ? ath10k_spectral_scan_config+0x96/0x200 [ath10k_core]
  [  168.104871]  [<ffffffff811386e2>] ? filemap_fault+0xb2/0x4a0
  [  168.106696]  [<ffffffffa03b97e6>] write_file_spec_scan_ctl+0x116/0x280 [ath10k_core]
  [  168.109618]  [<ffffffff812da3a1>] full_proxy_write+0x51/0x80
  [  168.111443]  [<ffffffff811957b8>] __vfs_write+0x28/0x120
  [  168.113090]  [<ffffffff812f1a2d>] ? security_file_permission+0x3d/0xc0
  [  168.114932]  [<ffffffff8109b912>] ? percpu_down_read+0x12/0x60
  [  168.116680]  [<ffffffff811965f8>] vfs_write+0xb8/0x1a0
  [  168.118293]  [<ffffffff81197966>] SyS_write+0x46/0xa0
  [  168.119912]  [<ffffffff818f2972>] entry_SYSCALL_64_fastpath+0x1a/0xa4
  [  168.121737] Code:  Bad RIP value.
  [  168.123318] RIP  [<          (null)>]           (null)

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove set/get_tsf ieee80211_ops
Pedersen, Thomas [Wed, 28 Sep 2016 23:56:30 +0000 (16:56 -0700)]
ath10k: remove set/get_tsf ieee80211_ops

Neither of these did the right thing:

- get_tsf just returned 0
- set_tsf assumed a simple offset was applied against
  get_tsf(), which works, except in the case of
  calculating TSF from rx_mactime (actual TSF).

Just remove them for now. We can reimplement set_tsf in
terms of TSF increment/decrement in the future if get_tsf
is ever supported by FW.

Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: implement offset_tsf ieee80211_op
Pedersen, Thomas [Wed, 28 Sep 2016 23:56:29 +0000 (16:56 -0700)]
ath10k: implement offset_tsf ieee80211_op

Current set_tsf is implemented in terms of TSF_INCREMENT
only. Instead support new WMI command TSF_DECREMENT and
export these through offset_tsf. Advantage is we get
more accurate TSF adjustments, and don't calculate wrong
offset in case absolute TSF was calculated from rx_mactime
(actual TSF).

The new WMI command is available in firmware
10.4-3.2.1-00033 for QCA4019 chips. Old drivers on new
firmware or vice versa shouldn't  be a problem since
get/set tsf logic was already broken.

Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: advertize hardware packet loss mechanism
Rajkumar Manoharan [Tue, 6 Sep 2016 07:08:41 +0000 (12:38 +0530)]
ath10k: advertize hardware packet loss mechanism

Indicate hardware (or firmware) supports that CQM packet-loss report
will be generated based on station kickout algorithm. As of now mac80211
tracks connection loss by missing msdu counts (50) whereas ath10k
firmware tracks them by missing ppdus (+ BAR tries). While firmware is
trying to adapt its rate table, mac80211 might send out low_ack event to
hostapd. This is causing frequent connect and disconnect iteration under
noisy environment or when station is roaming around.

Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoMerge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
Kalle Valo [Wed, 23 Nov 2016 12:51:38 +0000 (14:51 +0200)]
Merge ath-next from git://git./linux/kernel/git/kvalo/ath.git

ath.git patches for 4.10. Major changes:

ath9k

* add device tree bindings
* switch to use mac80211 intermediate software queues to reduce
  latency and fix bufferbloat

8 years agomwifiex: pcie: stop checking for NULL adapter->card
Brian Norris [Fri, 18 Nov 2016 14:00:34 +0000 (19:30 +0530)]
mwifiex: pcie: stop checking for NULL adapter->card

It should never be NULL here, and to think otherwise makes things
confusing.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: stop checking for NULL drvata/intfdata
Brian Norris [Fri, 18 Nov 2016 14:00:33 +0000 (19:30 +0530)]
mwifiex: stop checking for NULL drvata/intfdata

These are never NULL, so stop making people think they might be.

I don't change this for SDIO because SDIO has a racy card-reset handler
that reallocates this struct. I'd rather not touch that mess right now.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: sdio: don't check for NULL sdio_func
Brian Norris [Fri, 18 Nov 2016 14:00:32 +0000 (19:30 +0530)]
mwifiex: sdio: don't check for NULL sdio_func

sdio_func is retrieved via container_of() and should never be NULL.
Checking for NULL just makes the logic more confusing than necessary.
Stop doing that.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: usb: handle HS failures
Brian Norris [Fri, 18 Nov 2016 14:00:31 +0000 (19:30 +0530)]
mwifiex: usb: handle HS failures

SDIO and PCIe drivers handle this. Let's imitate it.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: reset card->adapter during device unregister
Xinming Hu [Fri, 18 Nov 2016 14:00:30 +0000 (19:30 +0530)]
mwifiex: reset card->adapter during device unregister

card->adapter gets initialized in mwifiex_register_dev(). As it's not
cleared in mwifiex_unregister_dev(), we may end up accessing the memory
which is already free in below scenario.

Scenario: Driver initialization is failed due to incorrect firmware or
some other reason. Meanwhile device reboot/unload occurs.

This is safe, now that we've properly synchronized suspend() and
remove() with the FW initialization thread; now that code can simply
check for 'card->adapter == NULL' and exit safely.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: resolve suspend() race with async FW init failure
Brian Norris [Fri, 18 Nov 2016 14:00:29 +0000 (19:30 +0530)]
mwifiex: resolve suspend() race with async FW init failure

Signed-off-by: Brian Norris <briannorris@chromium.org>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: don't pretend to resume while remove()'ing
Brian Norris [Fri, 18 Nov 2016 14:00:28 +0000 (19:30 +0530)]
mwifiex: don't pretend to resume while remove()'ing

The device core will not allow suspend() to race with remove().

Signed-off-by: Brian Norris <briannorris@chromium.org>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: remove redundant pdev check in suspend/resume handlers
Amitkumar Karwar [Fri, 18 Nov 2016 14:00:27 +0000 (19:30 +0530)]
mwifiex: remove redundant pdev check in suspend/resume handlers

to_pci_dev() would just do struct offset arithmetic on struct
device to get 'pdev' pointer. We never get NULL pdev pointer.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: resolve races between async FW init (failure) and device removal
Brian Norris [Fri, 18 Nov 2016 14:00:26 +0000 (19:30 +0530)]
mwifiex: resolve races between async FW init (failure) and device removal

It's possible for the FW init sequence to fail, which will trigger a
device cleanup sequence in mwifiex_fw_dpc(). This sequence can race with
device suspend() or remove() (e.g., reboot or unbind), and can trigger
use-after-free issues. Currently, this driver attempts (poorly) to
synchronize remove() using a semaphore, but it doesn't protect some of
the critical sections properly. Particularly, we grab a pointer to the
adapter struct (card->adapter) without checking if it's being freed or
not. We later do a NULL check on the adapter, but that doesn't work if
the adapter was freed.

Also note that the PCIe interface driver doesn't ever set card->adapter
to NULL, so even if we get the synchronization right, we still might try
to redo the cleanup in ->remove(), even if the FW init failure sequence
already did it.

This patch replaces the static semaphore with a per-device completion
struct, and uses that completion to synchronize the remove() thread with
the mwifiex_fw_dpc(). A future patch will utilize this completion to
synchronize the suspend() thread as well.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: complete blocked power save handshake in main process
Shengzhen Li [Fri, 18 Nov 2016 14:00:25 +0000 (19:30 +0530)]
mwifiex: complete blocked power save handshake in main process

Power save handshake with firmware might be blocked by on-going
data transfer.
this patch check the PS status in main process and complete
previous blocked PS handshake.
this patch also remove redudant check before call
mwifiex_check_ps_cond function.

Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Shengzhen Li <szli@marvell.com>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: check tx_hw_pending before downloading sleep confirm
Shengzhen Li [Fri, 18 Nov 2016 14:00:24 +0000 (19:30 +0530)]
mwifiex: check tx_hw_pending before downloading sleep confirm

We may get SLEEP event from firmware even if TXDone interrupt
for last Tx packet is still pending. In this case, we may
end up accessing PCIe memory for handling TXDone after power
save handshake is completed. This causes kernel crash with
external abort.

This patch will only allow downloading sleep confirm
when no tx done interrupt is pending in the hardware.

Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Shengzhen Li <szli@marvell.com>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: Enable WoWLAN for both sdio and pcie
Rajat Jain [Tue, 15 Nov 2016 13:36:04 +0000 (19:06 +0530)]
mwifiex: Enable WoWLAN for both sdio and pcie

Commit ce4f6f0c353b ("mwifiex: add platform specific wakeup interrupt
support") added WoWLAN feature only for sdio. This patch moves that
code to the common module so that all the interface drivers can use
it for free. It enables pcie and sdio for its use currently.

Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: Introduce mwifiex_probe_of() to parse common properties
Rajat Jain [Tue, 15 Nov 2016 13:36:03 +0000 (19:06 +0530)]
mwifiex: Introduce mwifiex_probe_of() to parse common properties

Introduce function mwifiex_probe_of() to parse common properties.
Interface drivers get to decide whether or not the device tree node
was a valid one (depending on the compatible property),
Lets fill "adapter->dt_node" in mwifiex_add_card().

The function mwifiex_probe_of() is currently only a place holder with
the next patch adding content to it.

Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: Allow mwifiex early access to device structure
Rajat Jain [Tue, 15 Nov 2016 13:36:02 +0000 (19:06 +0530)]
mwifiex: Allow mwifiex early access to device structure

Today all the interface drivers (usb/pcie/sdio) assign the
adapter->dev in the register_dev() callback, although they
have this piece of info well before hand.

This patch makes the device structure available for mwifiex
right at the beginning, so that it can be used for early
initialization if needed.

This is needed for subsequent patches in this patchset that
intend to unify and consolidate some of the code that would
otherwise have to be duplicated among the interface drivers
(sdio, pcie, usb).

Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: parse device tree node for PCIe
Xinming Hu [Fri, 18 Nov 2016 12:37:04 +0000 (18:07 +0530)]
mwifiex: parse device tree node for PCIe

This patch derives device tree node from pcie bus layer framework.
Device tree bindings file has been renamed(marvell-sd8xxx.txt ->
marvell-8xxx.txt) to accommodate PCIe changes.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Rajat Jain <rajatja@google.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: don't do unbalanced free()'ing in cleanup_if()
Brian Norris [Wed, 26 Oct 2016 23:29:20 +0000 (16:29 -0700)]
mwifiex: don't do unbalanced free()'ing in cleanup_if()

The cleanup_if() callback is the inverse of init_if(). We allocate our
'card' interface structure in the probe() function, but we free it in
cleanup_if(). That gives a few problems:
(a) we leak this memory if probe() fails before we reach init_if()
(b) we can't safely utilize 'card' after cleanup_if() -- namely, in
    remove() or suspend(), both of which might race with the cleanup
    paths in our asynchronous FW initialization path

Solution: just use devm_kzalloc(), which will free this structure
properly when the device is removed -- and drop the set_drvdata(...,
NULL), since the driver core does this for us. This also removes the
temptation to use drvdata == NULL as a hack for checking if the device
has been "cleaned up."

I *do* leave the set_drvdata(..., NULL) for the hacky SDIO
mwifiex_recreate_adapter(), since the device core won't be able to clear
that one for us.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: ignore calibration data failure
Amitkumar Karwar [Fri, 21 Oct 2016 15:15:48 +0000 (20:45 +0530)]
mwifiex: ignore calibration data failure

Firmware may reject calibration data from host for certain OTP
settings. In that case, we should continue initialisation ignoring
the failure.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: add power save parameters in hs_cfg cmd
Shengzhen Li [Fri, 14 Oct 2016 10:20:09 +0000 (15:50 +0530)]
mwifiex: add power save parameters in hs_cfg cmd

This patch adds power save parameters(hs_wake_interval and
hs_inactivity_timeout) in host sleep cfg cmd.

Signed-off-by: Shengzhen Li <szli@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix memory leak in mwifiex_save_hidden_ssid_channels()
Ricky Liang [Wed, 9 Nov 2016 03:37:28 +0000 (11:37 +0800)]
mwifiex: fix memory leak in mwifiex_save_hidden_ssid_channels()

kmemleak reports memory leak in mwifiex_save_hidden_ssid_channels():

unreferenced object 0xffffffc0a2914780 (size 192):
  comm "ksdioirqd/mmc2", pid 2004, jiffies 4307182506 (age 820.684s)
  hex dump (first 32 bytes):
    00 06 47 49 4e 2d 32 67 01 03 c8 60 6c 03 01 40  ..GIN-2g...`l..@
    07 10 54 57 20 34 04 1e 64 05 24 84 03 24 95 04  ..TW 4..d.$..$..
  backtrace:
    [<ffffffc0003375f4>] create_object+0x164/0x2b4
    [<ffffffc0008e3530>] kmemleak_alloc+0x50/0x88
    [<ffffffc000335120>] __kmalloc_track_caller+0x1bc/0x264
    [<ffffffc00030899c>] kmemdup+0x38/0x64
    [<ffffffbffc2311cc>] mwifiex_fill_new_bss_desc+0x3c/0x130 [mwifiex]
    [<ffffffbffc22ee9c>] mwifiex_save_curr_bcn+0x4ec/0x640 [mwifiex]
    [<ffffffbffc22f45c>] mwifiex_handle_event_ext_scan_report+0x1d4/0x268 [mwifiex]
    [<ffffffbffc2375d0>] mwifiex_process_sta_event+0x378/0x898 [mwifiex]
    [<ffffffbffc224dc8>] mwifiex_process_event+0x1a8/0x1e8 [mwifiex]
    [<ffffffbffc2228f0>] mwifiex_main_process+0x258/0x534 [mwifiex]
    [<ffffffbffc258858>] 0xffffffbffc258858
    [<ffffffc00071ee90>] process_sdio_pending_irqs+0xf8/0x160
    [<ffffffc00071efdc>] sdio_irq_thread+0x9c/0x1a4
    [<ffffffc000240d08>] kthread+0xf4/0x100
    [<ffffffc0002043fc>] ret_from_fork+0xc/0x50
    [<ffffffffffffffff>] 0xffffffffffffffff

Signed-off-by: Ricky Liang <jcliang@chromium.org>
Acked-by: Amitkumar Karwar <akarwar@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agossb: Fix error routine when fallback SPROM fails
Larry Finger [Sat, 5 Nov 2016 19:08:57 +0000 (14:08 -0500)]
ssb: Fix error routine when fallback SPROM fails

When there is a CRC error in the SPROM read from the device, the code
attempts to handle a fallback SPROM. When this also fails, the driver
returns zero rather than an error code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: Use dev_kfree_skb_irq instead of kfree_skb
Wei Yongjun [Tue, 1 Nov 2016 14:48:40 +0000 (14:48 +0000)]
rtlwifi: Use dev_kfree_skb_irq instead of kfree_skb

It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled, spin_lock_irqsave()
make sure always in irq disable context. So the kfree_skb()
should be replaced with dev_kfree_skb_irq().

This is detected by Coccinelle semantic patch.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agocw1200: fix bogus maybe-uninitialized warning
Arnd Bergmann [Tue, 25 Oct 2016 20:21:04 +0000 (22:21 +0200)]
cw1200: fix bogus maybe-uninitialized warning

On x86, the cw1200 driver produces a rather silly warning about the
possible use of the 'ret' variable without an initialization
presumably after being confused by the architecture specific definition
of WARN_ON:

drivers/net/wireless/st/cw1200/wsm.c: In function ‘wsm_handle_rx’:
drivers/net/wireless/st/cw1200/wsm.c:1457:9: error: ‘ret’ may be used uninitialized in this function [-Werror=maybe-uninitialized]

We have already checked that 'count' is larger than 0 here, so
we know that 'ret' is initialized. Changing the 'for' loop
into do/while also makes this clear to the compiler.

Suggested-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agowireless: fix bogus maybe-uninitialized warning
Arnd Bergmann [Mon, 24 Oct 2016 15:38:35 +0000 (17:38 +0200)]
wireless: fix bogus maybe-uninitialized warning

The hostap_80211_rx() function is supposed to set up the mac addresses
for four possible cases, based on two bits of input data. For
some reason, gcc decides that it's possible that none of the these
four cases apply and the addresses remain uninitialized:

drivers/net/wireless/intersil/hostap/hostap_80211_rx.c: In function ‘hostap_80211_rx’:
arch/x86/include/asm/string_32.h:77:14: warning: ‘src’ may be used uninitialized in this function [-Wmaybe-uninitialized]
drivers/net/wireless/intel/ipw2x00/libipw_rx.c: In function ‘libipw_rx’:
arch/x86/include/asm/string_32.h:77:14: error: ‘dst’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
arch/x86/include/asm/string_32.h:78:22: error: ‘*((void *)&dst+4)’ may be used uninitialized in this function [-Werror=maybe-uninitialized]

This warning is clearly nonsense, but changing the last case into
'default' makes it obvious to the compiler too, which avoids the
warning and probably leads to better object code too.

The same code is duplicated several times in the kernel, so this
patch uses the same workaround for all copies. The exact configuration
was hit only very rarely in randconfig builds and I only saw it
in three drivers, but I assume that all of them are potentially
affected, and it's better to keep the code consistent.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agop54: memset(0) whole array
Jiri Slaby [Fri, 14 Oct 2016 09:23:09 +0000 (11:23 +0200)]
p54: memset(0) whole array

gcc 7 complains:
drivers/net/wireless/intersil/p54/fwio.c: In function 'p54_scan':
drivers/net/wireless/intersil/p54/fwio.c:491:4: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]

Fix that by passing the correct size to memset.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: print name of connect status event
Rafał Miłecki [Fri, 14 Oct 2016 07:45:59 +0000 (09:45 +0200)]
brcmfmac: print name of connect status event

This simplifies debugging. Format %s (%u) comes from similar debugging
message in brcmf_fweh_event_worker.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agorsi: Host to device command frame vap_capabilites modified with new field vap status
Prameela Rani Garnepudi [Thu, 13 Oct 2016 11:26:45 +0000 (16:56 +0530)]
rsi: Host to device command frame vap_capabilites modified with new field vap status

* Command frame vap_capabilites is modified to use for vap add, vap delete
  and vap update in firmware, hence new filed vap status is added.
* When interface is down this frame needs to be send with vap status delete.
  Otherwise it is considered as wrong frame for the same interface in firmware.
* vap_update status is reserved for future.

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agorsi: Fix memory leak in module unload
Prameela Rani Garnepudi [Thu, 13 Oct 2016 11:25:46 +0000 (16:55 +0530)]
rsi: Fix memory leak in module unload

Observed crash when module is unloaded if CONFIG_RSI_DEBUGSFS is not set.
Fix: Debugfs entry removal moved inside CONFIG_RSI_DEBUGSFS flag in
             function rsi_mac80211_detach()
Memory leak found and fixed for below structures in function rsi_mac80211_detach()
* channel list for each supported band
* rsi debugfs info

Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agowlcore: Allow scans when in AP mode
James Minor [Fri, 7 Oct 2016 15:45:57 +0000 (10:45 -0500)]
wlcore: Allow scans when in AP mode

When in AP mode, scans can be done without changing firmware to
the multi-role firmware. Allow the interface to scan if forced
in the scan request.

Signed-off-by: James Minor <james.minor@ni.com>
Signed-off-by: Xander Huff <xander.huff@ni.com>
Reviewed-by: Ben Shelton <ben.shelton@ni.com>
Reviewed-by: Jaeden Amero <jaeden.amero@ni.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: Remove address of Free Software Foundation
Larry Finger [Wed, 5 Oct 2016 04:08:10 +0000 (23:08 -0500)]
rtlwifi: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl8192c: Remove address of Free Software Foundation
Larry Finger [Wed, 5 Oct 2016 04:08:09 +0000 (23:08 -0500)]
rtlwifi: rtl8192c: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl8188ee: Remove address of Free Software Foundation
Larry Finger [Wed, 5 Oct 2016 04:08:08 +0000 (23:08 -0500)]
rtlwifi: rtl8188ee: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl8723ae: Remove address of Free Software Foundation
Larry Finger [Wed, 5 Oct 2016 04:08:07 +0000 (23:08 -0500)]
rtlwifi: rtl8723ae: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl8192cu: Remove address of Free Software Foundation
Larry Finger [Wed, 5 Oct 2016 04:08:06 +0000 (23:08 -0500)]
rtlwifi: rtl8192cu: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl8192ce: Remove address of Free Software Foundation
Larry Finger [Wed, 5 Oct 2016 04:08:05 +0000 (23:08 -0500)]
rtlwifi: rtl8192ce: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl8192se: Remove address of Free Software Foundation
Larry Finger [Wed, 5 Oct 2016 04:08:04 +0000 (23:08 -0500)]
rtlwifi: rtl8192se: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: rtl8192de: Remove address of Free Software Foundation
Larry Finger [Wed, 5 Oct 2016 04:08:03 +0000 (23:08 -0500)]
rtlwifi: rtl8192de: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: report wakeup for wowlan
Rajat Jain [Tue, 4 Oct 2016 20:37:42 +0000 (13:37 -0700)]
mwifiex: report wakeup for wowlan

Register the WLAN device as a wakeup source since it can
wake the system via wake-on-wireless-lan. In an actual wowlan
event, notify the PM core that we are the current wakeup source.
This allows the PM core to update the wakeup attributes in /sys.

This was causing wakeup issues on chromeos as the system was
apparently confused about the wakeup source.

Signed-off-by: Wei-Ning Huang <wnhuang@google.com>
Signed-off-by: Rajat Jain <rajatja@google.com>
Tested-by: Wei-Ning Huang <wnhuang@chromium.org>
Reviewed-by: Eric Caruso <ejcaruso@chromium.org>
Acked-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agowlcore: Add RX_BA_WIN_SIZE_CHANGE_EVENT event
Maxim Altshul [Sun, 21 Aug 2016 11:24:25 +0000 (14:24 +0300)]
wlcore: Add RX_BA_WIN_SIZE_CHANGE_EVENT event

This event is used by the Firmware to limit the RX BA win size
for a specific link.

The event handler updates the new size in the mac's sta->sta struct.

BA sessions opened for that link will use the new restricted
win_size. This limitation remains until a new update is received or
until the link is closed.

Signed-off-by: Maxim Altshul <maxim.altshul@ti.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agowlcore: Pass win_size taken from ieee80211_sta to FW
Maxim Altshul [Sun, 21 Aug 2016 11:24:24 +0000 (14:24 +0300)]
wlcore: Pass win_size taken from ieee80211_sta to FW

When starting a new BA session, we must pass the win_size to the FW.

To do this we take max_rx_aggregation_subframes (BA RX win size)
which is stored in ieee80211_sta structure (e.g per link and not per HW)

We will use the value stored per link when passing the win_size to
firmware through the ACX_BA_SESSION_RX_SETUP command.

Signed-off-by: Maxim Altshul <maxim.altshul@ti.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoath10k: use the right length of "background"
Nicolas Iooss [Sat, 29 Oct 2016 11:17:37 +0000 (13:17 +0200)]
ath10k: use the right length of "background"

The word "background" contains 10 characters so the third argument of
strncmp() need to be 10 in order to match this prefix correctly.

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Fixes: 855aed1220d2 ("ath10k: add spectral scan feature")
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove extraneous error message in tx alloc
Mohammed Shafi Shajakhan [Wed, 9 Nov 2016 01:40:59 +0000 (03:40 +0200)]
ath10k: remove extraneous error message in tx alloc

Remove extraneous error message in 'ath10k_htt_tx_alloc_cont_frag_desc'
as the caller 'ath10k_htt_tx_alloc' already dumps a proper error
message

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: clean up HTT tx buffer allocation and free
Mohammed Shafi Shajakhan [Wed, 9 Nov 2016 01:40:58 +0000 (03:40 +0200)]
ath10k: clean up HTT tx buffer allocation and free

cleanup 'ath10k_htt_tx_alloc' by introducing the API's
'ath10k_htt_tx_alloc/free_{cont_txbuf, txdone_fifo} and
re-use them whereever needed

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix failure to send NULL func frame for 10.4
Mohammed Shafi Shajakhan [Wed, 9 Nov 2016 01:40:57 +0000 (03:40 +0200)]
ath10k: fix failure to send NULL func frame for 10.4

This partially reverts 'commit 2cdce425aa33
("ath10k: Fix broken NULL func data frame status for 10.4")'
Unfortunately this breaks sending NULL func and the existing
issue of obtaining proper tx status for NULL function will be
fixed. Also update the comments for feature flag added to be
useless and not working

Fixes: 2cdce425aa33 "ath10k: Fix broken NULL func data frame status for
10.4"
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: Switch to using mac80211 intermediate software queues.
Toke Høiland-Jørgensen [Wed, 9 Nov 2016 11:31:49 +0000 (12:31 +0100)]
ath9k: Switch to using mac80211 intermediate software queues.

This switches ath9k over to using the mac80211 intermediate software
queueing mechanism for data packets. It removes the queueing inside the
driver, except for the retry queue, and instead pulls from mac80211 when
a packet is needed. The retry queue is used to store a packet that was
pulled but can't be sent immediately.

The old code path in ath_tx_start that would queue packets has been
removed completely, as has the qlen limit tunables (since there's no
longer a queue in the driver to limit).

The mac80211 intermediate software queues offer significant latency
reductions, and this patch allows ath9k to realise them. The exact gains
from this varies with the test scenario, but in an access point scenario
we have seen latency reductions ranging from 1/3 to as much as an order
of magnitude. We also achieve slightly better aggregation.

Median latency (ping) figures with this patch applied at the access point,
with two high-rate stations and one low-rate station (HT20 5Ghz), running
a Flent rtt_fair_var_up test with one TCP flow and one ping flow going to
each station:

                                 Fast station        Slow station
Default pfifo_fast qdisc:            430.4 ms            638.7 ms
fq_codel qdisc on iface:              35.5 ms            211.8 ms
This patch set:                       22.4 ms             38.2 ms

Median aggregation sizes over the same test:

Default pfifo_fast qdisc:            9.5 pkts            1.9 pkts
fq_codel qdisc on iface:            11.2 pkts            1.9 pkts
This patch set:                     13.9 pkts            1.9 pkts

This patch is based on Tim's original patch set, but reworked quite
thoroughly.

Cc: Tim Shepard <shep@alum.mit.edu>
Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k_htc: fix minor mistakes in dev_err messages
Colin Ian King [Mon, 31 Oct 2016 15:12:47 +0000 (09:12 -0600)]
ath9k_htc: fix minor mistakes in dev_err messages

Add missing space in a dev_err message and join wrapped text so
it does not span multiple lines.  Fix spelling mistake on "unknown".

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: parse the device configuration from an OF node
Martin Blumenstingl [Sun, 16 Oct 2016 20:59:07 +0000 (22:59 +0200)]
ath9k: parse the device configuration from an OF node

This allows setting the MAC address and specifying that the firmware
will be requested from userspace (because there might not be a hardware
EEPROM connected to the chip) for ath9k based PCI devices using
the device tree.

There is some out-of-tree code to "convert devicetree to
ath9k_platform_data" (for example in OpenWrt and LEDE) which becomes
obsolete with this patch.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: add a helper to get the string representation of ath_bus_type
Martin Blumenstingl [Sun, 16 Oct 2016 20:59:06 +0000 (22:59 +0200)]
ath9k: add a helper to get the string representation of ath_bus_type

This can be used when the ath_bus_type has to be presented in a log
message or firmware filename.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoDocumentation: dt: net: add ath9k wireless device binding
Martin Blumenstingl [Sun, 16 Oct 2016 20:59:05 +0000 (22:59 +0200)]
Documentation: dt: net: add ath9k wireless device binding

Add documentation how devicetree can be used to configure ath9k based
devices.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: Really fix LED polarity for some Mini PCI AR9220 MB92 cards.
Vittorio Gambaletta (VittGam) [Wed, 9 Nov 2016 01:40:56 +0000 (03:40 +0200)]
ath9k: Really fix LED polarity for some Mini PCI AR9220 MB92 cards.

The active_high LED of my Wistron DNMA-92 is still being recognized as
active_low on 4.7.6 mainline. When I was preparing my former commit
0f9edcdd88a9 ("ath9k: Fix LED polarity for some Mini PCI AR9220 MB92
cards.") to fix that I must have somehow messed up with testing, because
I tested the final version of that patch before sending it, and it was
apparently working; but now it is not working on 4.7.6 mainline.

I initially added the PCI_DEVICE_SUB section for 0x0029/0x2096 above the
PCI_VDEVICE section for 0x0029; but then I moved the former below the
latter after seeing how 0x002A sections were sorted in the file.

This turned out to be wrong: if a generic PCI_VDEVICE entry (that has
both subvendor and subdevice IDs set to PCI_ANY_ID) is put before a more
specific one (PCI_DEVICE_SUB), then the generic PCI_VDEVICE entry will
match first and will be used.

With this patch, 0x0029/0x2096 has finally got active_high LED on 4.7.6.

While I'm at it, let's fix 0x002A too by also moving its generic definition
below its specific ones.

Fixes: 0f9edcdd88a9 ("ath9k: Fix LED polarity for some Mini PCI AR9220 MB92 cards.")
Cc: <stable@vger.kernel.org> #4.7+
Signed-off-by: Vittorio Gambaletta <linuxbugs@vittgam.net>
[kvalo@qca.qualcomm.com: improve the commit log based on email discussions]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agocw1200: Don't leak memory if krealloc failes
Johannes Thumshirn [Fri, 30 Sep 2016 12:39:17 +0000 (14:39 +0200)]
cw1200: Don't leak memory if krealloc failes

The call to krealloc() in wsm_buf_reserve() directly assigns the newly
returned memory to buf->begin. This is all fine except when krealloc()
failes we loose the ability to free the old memory pointed to by
buf->begin. If we just create a temporary variable to assign memory to
and assign the memory to it we can mitigate the memory leak.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix missing destroy_workqueue() on error in mwifiex_add_virtual_intf()
Wei Yongjun [Thu, 29 Sep 2016 14:57:56 +0000 (14:57 +0000)]
mwifiex: fix missing destroy_workqueue() on error in mwifiex_add_virtual_intf()

Add the missing destroy_workqueue() before return from
mwifiex_add_virtual_intf() in the error handling case.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix p2p device doesn't find in scan problem
Karthik D A [Wed, 28 Sep 2016 12:48:28 +0000 (18:18 +0530)]
mwifiex: fix p2p device doesn't find in scan problem

Marvell p2p device disappears from the list of p2p peers on the other
p2p device after disconnection.

It happens due to a bug in driver. When interface is changed from p2p
to station, certain variables(bss_type, bss_role etc.) aren't correctly
updated. This patch corrects them to fix the issue.

Signed-off-by: Karthik D A <karthida@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix command timeout problem seen in stress tests
Xinming Hu [Wed, 28 Sep 2016 12:48:27 +0000 (18:18 +0530)]
mwifiex: fix command timeout problem seen in stress tests

It is observed that if single tid 6 packet comes among with massive tid 0
packets, tid 6 packet may stay in it's queue and will never be
transmited. This is because wmm.highest_queued_prio will be set to 2
during transmission of tid 0 packets As a result, main work thread
keeps on looping without serving that packet. In this case, if command
has downloaded to firmware, driver doesn't process it's response causing
command timeout.

This patch will reset highest_queued_prio if packets exist in data
queue, and try to find a ra_list for current private.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: update tx_pkts_queued for requeued packets
Xinming Hu [Wed, 28 Sep 2016 12:48:26 +0000 (18:18 +0530)]
mwifiex: update tx_pkts_queued for requeued packets

wmm.tx_pkts_queued and ralist's total_pkt_count should be updated in
synchronization. They were not correctly updated in
mwifiex_send_processed_packet().

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: add memrw command information in README
Amitkumar Karwar [Wed, 28 Sep 2016 12:48:25 +0000 (18:18 +0530)]
mwifiex: add memrw command information in README

Support for this debugfs command is available in driver. This patch
adds usage information in README file.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: vendor_ie length check for parse WMM IEs
Karthik D A [Wed, 28 Sep 2016 12:48:24 +0000 (18:18 +0530)]
mwifiex: vendor_ie length check for parse WMM IEs

While copying the vendor_ie obtained from the cfg80211_find_vendor_ie()
to the struct mwifiex_types_wmm_info, length/size was inappropriate.
This patch corrects the required length needed to the
mwifiex_types_wmm_info

Signed-off-by: Karthik D A <karthida@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: Fix NULL pointer dereference in skb_dequeue()
Amitkumar Karwar [Wed, 28 Sep 2016 12:48:23 +0000 (18:18 +0530)]
mwifiex: Fix NULL pointer dereference in skb_dequeue()

At couple of places in cleanup path, we are just going through the
skb queue and freeing them without unlinking. This leads to a crash
when other thread tries to do skb_dequeue() and use already freed node.

The problem is freed by unlinking skb before freeing it.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: report error to PCIe for suspend failure
Amitkumar Karwar [Wed, 28 Sep 2016 12:48:22 +0000 (18:18 +0530)]
mwifiex: report error to PCIe for suspend failure

When host_sleep_config command fails, we should return an error to
PCIe, instead of continuing (and possibly panicking, when we try to keep
processing a timed-out ioctl after we return "successfully" from
suspend).

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: prevent register accesses after host is sleeping
Amitkumar Karwar [Wed, 28 Sep 2016 12:48:21 +0000 (18:18 +0530)]
mwifiex: prevent register accesses after host is sleeping

Following is mwifiex driver-firmware host sleep handshake.
It involves three threads. suspend handler, interrupt handler, interrupt
processing in main work queue.

1) Enter suspend handler
2) Download HS_CFG command
3) Response from firmware for HS_CFG
4) Suspend thread waits until handshake completes(i.e hs_activate becomes
   true)
5) SLEEP from firmware
6) SLEEP confirm downloaded to firmware.
7) SLEEP confirm response from firmware
8) Driver processes SLEEP confirm response and set hs_activate to wake up
suspend thread
9) Exit suspend handler
10) Read sleep cookie in loop and wait until it indicates firmware is
sleep.
11) After processing SLEEP confirm response, we are at the end of interrupt
processing routine. Recheck if there are interrupts received while we were
processing them.

During suspend-resume stress test, it's been observed that we may end up
acessing PCIe hardware(in 10 and 11) when PCIe bus is closed which leads
to a kernel crash.

This patch solves the problem with below changes.
a) action 10 above can be done before 8
b) Skip 11 if hs_activated is true. SLEEP confirm response
is the last interrupt from firmware. No need to recheck for
pending interrupts.
c) Add flush_workqueue() in suspend handler.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: proto: add callback for queuing TX data
Rafał Miłecki [Mon, 26 Sep 2016 21:51:44 +0000 (23:51 +0200)]
brcmfmac: proto: add callback for queuing TX data

So far our core code was calling brcmf_fws_process_skb which wasn't
a proper thing to do. If case of devices using msgbuf protocol fwsignal
shouldn't be used. It was an unnecessary extra layer simply calling
a protocol specifix txdata function.

Please note we already have txdata callback, but it's used for calls
between bcdc and fwsignal so it couldn't be simply used there.

This makes core code more generic (instead of bcdc/fwsignal specific).

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agort2x00: add support for mac addr from device tree
Mathias Kresin [Fri, 26 Aug 2016 07:16:53 +0000 (09:16 +0200)]
rt2x00: add support for mac addr from device tree

On some devices the EEPROMs of Ralink Wi-Fi chips have a default Ralink
MAC address set (RT3062F: 00:0C:43:30:62:00, RT3060F:
00:0C:43:30:60:00). Using multiple of these devices in the same network
can cause nasty issues.

Allow to override the MAC in the EEPROM with (a known good) one set in
the device tree to bypass the issue.

Signed-off-by: Mathias Kresin <dev@kresin.me>
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoMerge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
Kalle Valo [Wed, 9 Nov 2016 00:15:17 +0000 (02:15 +0200)]
Merge ath-next from git://git./linux/kernel/git/kvalo/ath.git

ath.git patches for 4.10. Major changes:

ath10k

* allow setting coverage class for first generation cards
* read regulatory domain from ACPI

ath9k

* disable RNG by default

8 years agoMerge tag 'iwlwifi-next-for-kalle-2016-10-25-2' of git://git.kernel.org/pub/scm/linux...
Kalle Valo [Thu, 27 Oct 2016 15:29:18 +0000 (18:29 +0300)]
Merge tag 'iwlwifi-next-for-kalle-2016-10-25-2' of git://git./linux/kernel/git/iwlwifi/iwlwifi-next

* Finalize and enable dynamic queue allocation;
* Use dev_coredumpmsg() to prevent locking the driver;
* Small fix to pass the AID to the FW;
* Use FW PS decisions with multi-queue;

8 years agodevlink: Prevent port_type_set() callback when it's not needed
Elad Raz [Sun, 23 Oct 2016 15:43:05 +0000 (17:43 +0200)]
devlink: Prevent port_type_set() callback when it's not needed

When a port_type_set() is been called and the new port type set is the same
as the old one, just return success.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofirewire: net: set initial MTU = 1500 unconditionally, fix IPv6 on some CardBus cards
Stefan Richter [Sun, 23 Oct 2016 14:30:56 +0000 (16:30 +0200)]
firewire: net: set initial MTU = 1500 unconditionally, fix IPv6 on some CardBus cards

firewire-net, like the older eth1394 driver, reduced the initial MTU to
less than 1500 octets if the local link layer controller's asynchronous
packet reception limit was lower.

This is bogus, since this reception limit does not have anything to do
with the transmission limit.  Neither did this reduction affect the TX
path positively, nor could it prevent link fragmentation at the RX path.

Many FireWire CardBus cards have a max_rec of 9, causing an initial MTU
of 1024 - 16 = 1008.  RFC 2734 and RFC 3146 allow a minimum max_rec = 8,
which would result in an initial MTU of 512 - 16 = 496.  On such cards,
IPv6 could only be employed if the MTU was manually increased to 1280 or
more, i.e. IPv6 would not work without intervention from userland.

We now always initialize the MTU to 1500, which is the default according
to RFC 2734 and RFC 3146.

On a VIA VT6316 based CardBus card which was affected by this, changing
the MTU from 1008 to 1500 also increases TX bandwidth by 6 %.
RX remains unaffected.

CC: netdev@vger.kernel.org
CC: linux1394-devel@lists.sourceforge.net
CC: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofirewire: net: fix maximum possible MTU
Stefan Richter [Sun, 23 Oct 2016 14:29:03 +0000 (16:29 +0200)]
firewire: net: fix maximum possible MTU

Commit b3e3893e1253 ("net: use core MTU range checking in misc drivers")
mistakenly introduced an upper limit for firewire-net's MTU based on the
local link layer controller's reception capability.  Revert this.  Neither
RFC 2734 nor our implementation impose any particular upper limit.

Actually, to be on the safe side and to make the code explicit, set
ETH_MAX_MTU = 65535 as upper limit now.

(I replaced sizeof(struct rfc2734_header) by the equivalent
RFC2374_FRAG_HDR_SIZE in order to avoid distracting long/int conversions.)

Fixes: b3e3893e1253('net: use core MTU range checking in misc drivers')
CC: netdev@vger.kernel.org
CC: linux1394-devel@lists.sourceforge.net
CC: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: netcp: add missing of_node_put() in netcp_probe()
Wei Yongjun [Sat, 22 Oct 2016 14:40:17 +0000 (14:40 +0000)]
net: netcp: add missing of_node_put() in netcp_probe()

This node pointer is returned by of_get_child_by_name() with refcount
incremented in this function. of_node_put() on it before exitting this
function.

This is detected by Coccinelle semantic patch.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ena: use setup_timer() and mod_timer()
Wei Yongjun [Sat, 22 Oct 2016 14:36:36 +0000 (14:36 +0000)]
net: ena: use setup_timer() and mod_timer()

Use setup_timer() instead of init_timer(), being the preferred/standard
way to set a timer up.

Also, quoting the mod_timer() function comment:
-> mod_timer() is a more efficient way to update the expire field of an
   active timer (if the timer is inactive it will be activated).

Use setup_timer and mod_timer to setup and arm a timer, to make the code
cleaner and easier to read.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoamd-xgbe: Fix error return code in xgbe_probe()
Wei Yongjun [Sat, 22 Oct 2016 14:35:30 +0000 (14:35 +0000)]
amd-xgbe: Fix error return code in xgbe_probe()

Fix to return error code -ENODEV from the DMA is not supported error
handling case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ns83820: use dev_kfree_skb_irq instead of kfree_skb
Wei Yongjun [Sat, 22 Oct 2016 14:34:55 +0000 (14:34 +0000)]
net: ns83820: use dev_kfree_skb_irq instead of kfree_skb

It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled, spin_lock_irqsave()
make sure always in irq disable context. So the kfree_skb()
should be replaced with dev_kfree_skb_irq().

This is detected by Coccinelle semantic patch.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: eth: altera: Fix error return code in altera_tse_probe()
Wei Yongjun [Sat, 22 Oct 2016 14:28:38 +0000 (14:28 +0000)]
net: eth: altera: Fix error return code in altera_tse_probe()

Fix to return error code -EINVAL from the error handling
case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dsa: mv88e6xxx: use setup_timer to simplify the code
Wei Yongjun [Sat, 22 Oct 2016 14:28:00 +0000 (14:28 +0000)]
net: dsa: mv88e6xxx: use setup_timer to simplify the code

Use setup_timer function instead of initializing timer with the function
and data fields.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: netcp: drop kfree for memory allocated with devm_kzalloc
Wei Yongjun [Sat, 22 Oct 2016 12:32:04 +0000 (12:32 +0000)]
net: netcp: drop kfree for memory allocated with devm_kzalloc

It's not necessary to free memory allocated with devm_kzalloc in the
remove path and using kfree leads to a double free.

Fixes: 84640e27f230 ("net: netcp: Add Keystone NetCP core ethernet
driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobatman-adv: Revert "use core MTU range checking in misc drivers"
Sven Eckelmann [Sat, 22 Oct 2016 07:46:24 +0000 (09:46 +0200)]
batman-adv: Revert "use core MTU range checking in misc drivers"

The maximum MTU is defined via the slave devices of an batman-adv
interface. Thus it is not possible to calculate the max_mtu during the
creation of the batman-adv device when no slave devices are attached. Doing
so would for example break non-fragmentation setups which then
(incorrectly) allow an MTU of 1500 even when underlying device cannot
transport 1500 bytes + batman-adv headers.

Checking the dynamically calculated max_mtu via the minimum of the slave
devices MTU during .ndo_change_mtu is also used by the bridge interface.

Cc: Jarod Wilson <jarod@redhat.com>
Fixes: b3e3893e1253 ("net: use core MTU range checking in misc drivers")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'BCM54612E'
David S. Miller [Wed, 26 Oct 2016 21:15:27 +0000 (17:15 -0400)]
Merge branch 'BCM54612E'

Xo Wang says:

====================
Broadcom BCM54612E support

This series is based on tip of torvalds/master.

The first patch adds register definitions from Broadcom docs.

The second patch adds the BCM54612E PHY ID, flags, and device-specific
RGMII internal delay initialization.

I tested on a custom board with an Aspeed AST2500 SOC with its second
MAC connected to this PHY.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: broadcom: Add support for BCM54612E
Xo Wang [Fri, 21 Oct 2016 17:20:13 +0000 (10:20 -0700)]
net: phy: broadcom: Add support for BCM54612E

This PHY has internal delays enabled after reset. This clears the
internal delay enables unless the interface specifically requests them.

Signed-off-by: Xo Wang <xow@google.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: broadcom: Update Auxiliary Control Register macros
Xo Wang [Fri, 21 Oct 2016 17:20:12 +0000 (10:20 -0700)]
net: phy: broadcom: Update Auxiliary Control Register macros

Add the RXD-to-RXC skew (delay) time bit in the Miscellaneous Control
shadow register and a mask for the shadow selector field.

Remove a re-definition of MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL.

Signed-off-by: Xo Wang <xow@google.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosch_htb: do not report fake rate estimators
Eric Dumazet [Fri, 21 Oct 2016 16:02:43 +0000 (09:02 -0700)]
sch_htb: do not report fake rate estimators

When I prepared commit d250a5f90e53 ("pkt_sched: gen_estimator: Dont
report fake rate estimators"), htb still had an implicit rate estimator
for all its classes.

Then later, I made this rate estimator optional in commit 64153ce0a7b6
("net_sched: htb: do not setup default rate estimators"), but I forgot
to update htb use of gnet_stats_copy_rate_est()

After this patch, "tc -s qdisc ..." no longer report fake rate
estimators for HTB classes.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>