GitHub/moto-9609/android_kernel_motorola_exynos9610.git
8 years agoath9k: Remove some #defined constants to decrease verbosity
Benjamin Berg [Mon, 4 Jul 2016 12:37:24 +0000 (14:37 +0200)]
ath9k: Remove some #defined constants to decrease verbosity

The removed ATH9K_SLOT_TIME_X constants simply map the value in microseconds
to the same integer. These constants were not used consistently, so fix the
inconsistency issue by replacing all occurances with the integer equivalent.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: Expose tsf_adjustment in mac80211 tsf getters and setters.
Benjamin Berg [Mon, 4 Jul 2016 12:37:23 +0000 (14:37 +0200)]
ath9k: Expose tsf_adjustment in mac80211 tsf getters and setters.

The ath9k driver modifies the TSF for VIFs for the purpose of sending
beacons in a staggered fashion. This patch exposes this VIF specific
adjustment of the TSF value to mac80211. Without the change the TSF
routines handle the hardware TSF value instead of the actual TSF value as
seen on the air.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: Use tsf offset helper in ath9k_hw_reset
Benjamin Berg [Mon, 4 Jul 2016 12:37:22 +0000 (14:37 +0200)]
ath9k: Use tsf offset helper in ath9k_hw_reset

These changes make ath9k_hw_reset more consistent with other places that
handle the TSF value by using the same helper routine.

A slight improvement is to not assume that a fixed time of 1.5ms has
passed for the initval writes when compared to the first write attempt.
Instead the TSF value is re-calculated which will yield a higher accuracy
of the restored TSF timer.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: Handle channel context in get_/set_/reset_tsf
Benjamin Berg [Mon, 4 Jul 2016 12:37:21 +0000 (14:37 +0200)]
ath9k: Handle channel context in get_/set_/reset_tsf

The ath9k TSF handling routines need to be aware of the channel context that
is being modified. With this change the TSF related values that are stored
in each channel context will be correctly tracked and the harware will only
be updated if the modified context is currently the active one.

Without this change the TSF modifications done using these routines would
for example be lost during a hardware reset as done by ath_complete_reset.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: Correct TSF adjustment to align the beacon time correctly
Benjamin Berg [Mon, 4 Jul 2016 12:37:20 +0000 (14:37 +0200)]
ath9k: Correct TSF adjustment to align the beacon time correctly

Beacons were not send out at (timestamp % beacon_time == 0) for interfaces
other than the primary one. To send out beacons with the correct timestamp
according to 10.1.3.2 of the 802.11 standard the tsf_adjustment has to be
set to the negative time difference instead of positive. This way the
later beacons get corrected to have a lower (and similar) timestamp with
regard to the beacon from slot 0.

I am not aware about any issues that have been caused by this.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: move all ath9k_platform_data initialization into one function
Martin Blumenstingl [Thu, 23 Jun 2016 14:57:13 +0000 (16:57 +0200)]
ath9k: move all ath9k_platform_data initialization into one function

No functional changes, this simply makes the code easier to understand
because all initialization based on ath9k_platform_data is now within
one function.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: remove return value from ath9k_hw_init_macaddr
Martin Blumenstingl [Thu, 23 Jun 2016 14:57:12 +0000 (16:57 +0200)]
ath9k: remove return value from ath9k_hw_init_macaddr

ath9k_hw_init_macaddr unconditionally returns 0 in all cases, making the
return value unnecessary.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: ath9k_hw_init_macaddr should not overwrite valid MAC addresses
Martin Blumenstingl [Thu, 23 Jun 2016 14:57:11 +0000 (16:57 +0200)]
ath9k: ath9k_hw_init_macaddr should not overwrite valid MAC addresses

Currently setting the MAC address via ath9k_platform_data works only due
to the order in which init.c sets common->macaddr, which is done after
ath9k_hw_init_macaddr was executed. It would be better if the latter
was independent of the order in which it's being called.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: remove variable which is set but never read
Martin Blumenstingl [Thu, 23 Jun 2016 14:57:10 +0000 (16:57 +0200)]
ath9k: remove variable which is set but never read

No functional changes - this only removes a variable which is set but
never read.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: Allow configuration of LED polarity in platform data.
Martin Blumenstingl [Thu, 23 Jun 2016 14:57:09 +0000 (16:57 +0200)]
ath9k: Allow configuration of LED polarity in platform data.

Some devices running OpenWrt need this and it makes sense to add this
to ath9k_platform_data as the next patches will add a devicetree
(boolean) property for it as well.

Suggested-by: Vittorio Gambaletta <openwrt@vittgam.net>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowcn36xx: Fix up wcn36xx_smd_update_scan_params()
Bjorn Andersson [Mon, 20 Jun 2016 06:19:48 +0000 (23:19 -0700)]
wcn36xx: Fix up wcn36xx_smd_update_scan_params()

Fix up the wcn36xx_smd_update_scan_params() to work with non-ancient
versions of the firmware and support actually specifying the list of
channels.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowcn36xx: Correct DXE chip version differentiation
Bjorn Andersson [Mon, 20 Jun 2016 06:19:46 +0000 (23:19 -0700)]
wcn36xx: Correct DXE chip version differentiation

The CCU block in WCNSS is configured for appropriate routing of
interrupts from the DXE to the application cpu, this is not dependant on
the iris version (wcn3660 vs wcn3680), but rather if the SoC has a riva
or pronto built in.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowcn36xx: Split mmio space into explicit regions
Bjorn Andersson [Mon, 20 Jun 2016 06:19:45 +0000 (23:19 -0700)]
wcn36xx: Split mmio space into explicit regions

Split the wcnss mmio space into explicit regions for ccu and dxe and
acquire these from the node referenced by the qcom,mmio phandle.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowcn36xx: Change indication list lock to spinlock
Bjorn Andersson [Mon, 20 Jun 2016 06:19:44 +0000 (23:19 -0700)]
wcn36xx: Change indication list lock to spinlock

In preparation for handling incoming messages from IRQ context, change
the indication list lock to a spinlock

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowcn36xx: Fold indication payload into message header
Bjorn Andersson [Mon, 20 Jun 2016 06:19:43 +0000 (23:19 -0700)]
wcn36xx: Fold indication payload into message header

Merge the two allocation instead of separately allocating room for the
indication payload.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: replace warning with an error message if HTT op version is unset
Mohammed Shafi Shajakhan [Thu, 30 Jun 2016 12:24:01 +0000 (15:24 +0300)]
ath10k: replace warning with an error message if HTT op version is unset

Print an ath10k error message rather a call trace when HTT op version is
not found from firmware META data (IE). This should be sufficient to figure
out what went wrong.

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: enable support for QCA9888
Anilkumar Kolli [Thu, 30 Jun 2016 12:24:00 +0000 (15:24 +0300)]
ath10k: enable support for QCA9888

QCA9888 shares the same configuration with QCA99X0
with NSS=2.

Signed-off-by: Anilkumar Kolli <akolli@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove unused member in ath10k_hw_regs
Anilkumar Kolli [Thu, 30 Jun 2016 12:24:00 +0000 (15:24 +0300)]
ath10k: remove unused member in ath10k_hw_regs

rtc_state_cold_reset_mask is unused in ath10k_hw_regs.
instead fixed delays are used.

Signed-off-by: Anilkumar Kolli <akolli@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: Clean up peer when sta goes away.
Ben Greear [Thu, 30 Jun 2016 12:23:59 +0000 (15:23 +0300)]
ath10k: Clean up peer when sta goes away.

If WMI and/or firmware has issues removing the peer object,
then we still need to clean up the peer object in the driver.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: Add WARN_ON if we over-write peer-map pointer.
Ben Greear [Thu, 30 Jun 2016 12:23:58 +0000 (15:23 +0300)]
ath10k: Add WARN_ON if we over-write peer-map pointer.

Not sure this can happen, but seems like a reasonable sanity
check.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove extra space on ath10k_update_channel_list
Eduardo Abinader [Thu, 30 Jun 2016 12:23:55 +0000 (15:23 +0300)]
ath10k: remove extra space on ath10k_update_channel_list

just to comply to coding style.

Signed-off-by: Eduardo Abinader <eduardo.abinader@riverbed.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: simplify pktlog htt event processing
Ashok Raj Nagarajan [Thu, 30 Jun 2016 12:23:55 +0000 (15:23 +0300)]
ath10k: simplify pktlog htt event processing

It is expected that all pktlog events for 10.4 firmware based solutions
should come through CE8 where as in case of 10.2 firmware based solutions,
it should come through one of the HTT events (HTT_T2H_MSG_TYPE_PKTLOG).

But from experiments with 10.4 based solutions, it is observed that pktlog
event for ATH_PKTLOG_TYPE_TX_MSDU_ID is coming through HTT pktlog event.
Currently, we always parse with 10.2 pktlog header which will lead to
pktlog decoding issues (payload length mismatch exceptions)

For trace points, it is required to provide only the payload size. So
fixing this by simplifying the payload size calculation without the use of
ath10k pktlog headers.

While there, remove the unused ath10k pktlog headers.

Signed-off-by: Ashok Raj Nagarajan <arnagara@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove unused <linux/semaphore.h>
Chaehyun Lim [Thu, 30 Jun 2016 12:23:54 +0000 (15:23 +0300)]
ath10k: remove unused <linux/semaphore.h>

<linux/semaphore.h> is not used anymore, so just remove the include.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: ensure peer_map references are cleaned up
Ben Greear [Thu, 30 Jun 2016 12:23:53 +0000 (15:23 +0300)]
ath10k: ensure peer_map references are cleaned up

While debugging OS crashes due to firmware crashes, I enabled
kasan, and it noticed that peer objects were being used-after-freed.

Looks like there are two places we could be leaving stale references
in the peer-map, so clean that up.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: ensure txrx-compl-task is stopped when cleaning htt-tx
Ben Greear [Thu, 30 Jun 2016 12:23:53 +0000 (15:23 +0300)]
ath10k: ensure txrx-compl-task is stopped when cleaning htt-tx

Otherwise, the txrx-compl-task may access some bad memory?

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove debugfs support for Per STA total rx duration
Mohammed Shafi Shajakhan [Thu, 30 Jun 2016 12:23:50 +0000 (15:23 +0300)]
ath10k: remove debugfs support for Per STA total rx duration

cfg80211/nl80211 interface changes for per STA total rx-duration and
very basic 'ath10k_sta_statistics'  mac80211 callback is implemented
to extend support for per station statistics from the driver.

Also provision in 'iw dev wlan#N station dump' to parse rx-duration
is supported. So its safer to remove the debugfs entry for per STA
rx-duration

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: add support for ath10k_sta_statistics support
Mohammed Shafi Shajakhan [Thu, 30 Jun 2016 12:23:50 +0000 (15:23 +0300)]
ath10k: add support for ath10k_sta_statistics support

Enable support for 'drv_sta_statistics' callback.
Export rx_duration support if available to cfg80211/nl80211

This can also act as a placeholder for any new per STA stats support

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix 10.4 extended peer stats update
Mohammed Shafi Shajakhan [Thu, 30 Jun 2016 12:23:47 +0000 (15:23 +0300)]
ath10k: fix 10.4 extended peer stats update

10.4 'extended peer stats' will be not be appended with normal peer stats
data and they shall be coming in separate chunks. Fix this by maintaining
a separate linked list 'extender peer stats' for 10.4 and update
rx_duration for per station statistics. Also parse through beacon filter
(if enabled), to make sure we parse the extended peer stats properly.
This issue was exposed when more than one client is connected and
extended peer stats for 10.4 is enabled

The order for the stats is as below
S - standard peer stats, E- extended peer stats, B - beacon filter stats

{S1, S2, S3..} -> {B1, B2, B3..}(if available) -> {E1, E2, E3..}

Fixes: f9575793d44c ("ath10k: enable parsing per station rx duration 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: Fix programming of minCCA power threshold
Sven Eckelmann [Wed, 29 Jun 2016 16:29:30 +0000 (19:29 +0300)]
ath9k: Fix programming of minCCA power threshold

The function ar9003_hw_apply_minccapwr_thresh takes as second parameter not
a pointer to the channel but a boolean value describing whether the channel
is 2.4GHz or not. This broke (according to the origin commit) the ETSI
regulatory compliance on 5GHz channels.

Fixes: 3533bf6b15a0 ("ath9k: Fix regulatory compliance")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Cc: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath9k: return false when reading wrong eeprom offset
Eduardo Abinader [Wed, 29 Jun 2016 16:29:29 +0000 (19:29 +0300)]
ath9k: return false when reading wrong eeprom offset

Just setting the proper return for reading beyond the eeprom data.

Signed-off-by: Eduardo Abinader <eduardo.abinader@riverbed.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix some typo in spectral code commments
Mohammed Shafi Shajakhan [Wed, 29 Jun 2016 16:29:29 +0000 (19:29 +0300)]
ath10k: fix some typo in spectral code commments

Found this obvious typo while going through the spectral
code design in ath10k

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: disable TX_STBC for tx chainmask of 1
Mohammed Shafi Shajakhan [Wed, 29 Jun 2016 16:29:27 +0000 (19:29 +0300)]
ath10k: disable TX_STBC for tx chainmask of 1

Disable TX_STBC for both HT and VHT if the devices tx chainmask is '1'
TX_STBC is required only for devices with tx_chainmask > 1. This fixes
a ping failure for QCA9887 (1x1) in HT/VHT mode

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: enable beacon loss detection support for 10.4
Mohammed Shafi Shajakhan [Wed, 29 Jun 2016 16:29:26 +0000 (19:29 +0300)]
ath10k: enable beacon loss detection support for 10.4

Enable beacon loss detection support for 10.4 by handling
roam event. With this change QCA99X0 station is able to
detect beacon loss when the AP is powered off

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix potential null dereference bugs
Bob Copeland [Wed, 29 Jun 2016 16:29:25 +0000 (19:29 +0300)]
ath10k: fix potential null dereference bugs

Smatch warns about a number of cases in ath10k where a pointer is
null-checked after it has already been dereferenced, in code involving
ath10k private virtual interface pointers.

Fix these by making the dereference happen later.

Addresses the following smatch warnings:

drivers/net/wireless/ath/ath10k/mac.c:3651 ath10k_mac_txq_init() warn: variable dereferenced before check 'txq' (see line 3649)
drivers/net/wireless/ath/ath10k/mac.c:3664 ath10k_mac_txq_unref() warn: variable dereferenced before check 'txq' (see line 3659)
drivers/net/wireless/ath/ath10k/htt_tx.c:70 __ath10k_htt_tx_txq_recalc() warn: variable dereferenced before check 'txq->sta' (see line 52)
drivers/net/wireless/ath/ath10k/htt_tx.c:740 ath10k_htt_tx_get_vdev_id() warn: variable dereferenced before check 'cb->vif' (see line 736)
drivers/net/wireless/ath/ath10k/txrx.c:86 ath10k_txrx_tx_unref() warn: variable dereferenced before check 'txq' (see line 84)
drivers/net/wireless/ath/ath10k/wmi.c:1837 ath10k_wmi_op_gen_mgmt_tx() warn: variable dereferenced before check 'cb->vif' (see line 1825)

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: remove unneccessary WARN_ON_ONCE in rx during ACS
Mohammed Shafi Shajakhan [Wed, 29 Jun 2016 16:29:24 +0000 (19:29 +0300)]
ath10k: remove unneccessary WARN_ON_ONCE in rx during ACS

The below warning message seems to hit occasionally with the following
combination (IPQ4019 + ACS scan) where we receive packets as a self peer
when hostapd does ACS when we bring up AP mode . ath10k has the below
fall back mechanism to fetch current operating channel in rx (it will
check for the next channel tracking variable if the current one is NULL)

[scan channel] --> [rx channel] --> [peer channel] -->
[vdev channel] -->  [any vdev channel] --> [target oper channel]

'scan channel' and 'target operating channel' are directly fetched from
firmware events. All the others should be updated by mac80211.

During ACS scan we wouldn't have a valid channel context
assigned from mac80211 ('ar->rx_channel'), and also relying on
('ar->scan_channel') is not helpful (it becomes NULL when it goes to
BSS channel and also when the scan event is completed). In short we
cannot always rely on these two channel tracking variables.

'Target Operating Channel' (ar->tgt_oper_chan) seems to keep track of
the current operating even while we are doing ACS scan and etc. Hence
remove this un-necessary warning message and continue with
target_operating channel. At the worst case scenario when the target
operating channel is invalid (NULL) we already have an ath10k warning
message to notify we really don't have a proper channel configured in
rx to update the rx status("no channel configured; ignoring frame(s)!")

    WARNING: CPU: 0 PID: 0 at ath/ath10k/htt_rx.c:803
    [<c0318838>] (warn_slowpath_null) from [<bf4a0104>]
    (ath10k_htt_rx_h_channel+0xe0/0x1b8 [ath10k_core])
    [<bf4a0104>] (ath10k_htt_rx_h_channel [ath10k_core]) from
    [<bf4a025c>] (ath10k_htt_rx_h_ppdu+0x80/0x288 [ath10k_core])
    [<bf4a025c>] (ath10k_htt_rx_h_ppdu [ath10k_core]) from
    [<bf4a1a9c>] (ath10k_htt_txrx_compl_task+0x724/0x9d4 [ath10k_core])
    [<bf4a1a9c>] (ath10k_htt_txrx_compl_task [ath10k_core])

Fixes:3b0499e9ce42 ("ath10k: reduce warning messages during rx without proper channel context")
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agoath10k: fix crash during card removal
Mohammed Shafi Shajakhan [Wed, 29 Jun 2016 16:29:24 +0000 (19:29 +0300)]
ath10k: fix crash during card removal

Usually when the firmware crashes we check for the value
'FW_IND_EVENT_PENDING' in 'FW_INDICATOR_ADDRESS' and proceed with
disabling the irq and dumping firmware 'crash dump'. Now
when the PCI card is unplugged from the device the PCI controller
seems to generate a spurious interrupt after some time which
was as treated a firmware crash and resulting in the below race
condition (and eventually crashing the system)

ath10k_core_unregister -> ath10k_core_free_board_files

...... device unplug spurious interrupt .........

ath10k_pci_taklet -> ath10k_pci_fw_crashed_dump  ...etc

Clearly even after the firmware board files related data structure
is freed up we are getting a spurious interrupt from PCI with 0xfffffff
in the 'FW_INDICATOR_ADDRESS' resulting in scheduling of the pci tasklet
and doing a crash dump, printing f/w board related info resulting in the
below crash. Fix this by detecting this spurious interrupt in ath10k PCI
irq handler itself and return IRQ_NONE. Thanks to Michal Kazior for
helping us conclude the most appropriate fix.

Call trace:

 EIP is at ath10k_debug_print_board_info+0x39/0xb0
[ath10k_core]
EAX: 00000000 EBX: d4de15a0 ECX: 00000000 EDX: 00000064
ESI: f615ddd0 EDI: f8530000 EBP: f615de3c ESP: f615ddbc
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
CR0: 80050033 CR2: 00000004 CR3: 01c0a000 CR4: 000006f0
Stack:
 f615ddd0 00000064 f8b4ecdd 00000000 00000000 00412f4e
00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000
Call Trace:
  [<f8b1f517>] ath10k_print_driver_info+0x17/0x30
[ath10k_core]
[<f875463a>] ath10k_pci_fw_crashed_dump+0x7a/0xe0
[ath10k_pci]
[<f87549d0>] ath10k_pci_tasklet+0x70/0x90 [ath10k_pci]
[<c106151e>] tasklet_action+0x9e/0xb0

Cc: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
8 years agowlcore: reconfigure sta rates on authorization
Guy Mishol [Sun, 19 Jun 2016 14:08:58 +0000 (17:08 +0300)]
wlcore: reconfigure sta rates on authorization

Since stations can now be added before association
(NL80211_FEATURE_FULL_AP_CLIENT_STATE support),
no supported rates are set when the station is added
to the fw, resulting in fw recovery.

Fix it by first configuring the AP basic rates as
the station configured rates (when the station is
first added to the driver), and after the station
was authorized re-configure it, now with the actual
supported rates.

Signed-off-by: Guy Mishol <guym@ti.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: add missing break when deleting P2P_DEVICE
Rafał Miłecki [Sat, 18 Jun 2016 23:55:57 +0000 (01:55 +0200)]
brcmfmac: add missing break when deleting P2P_DEVICE

We obviously don't want to fall through in that switch. With this change
1) We wait for event (triggered by p2p_disc) as expected
2) We remove interface manually on timeout
3) We return 0 on success instead of -ENOTSUPP

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: include also core.h header in cfg80211.h
Rafał Miłecki [Sat, 18 Jun 2016 16:49:38 +0000 (18:49 +0200)]
brcmfmac: include also core.h header in cfg80211.h

This header provides two inline functions using struct brcmf_if so we
need core.h to avoid:

drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h: In function â€˜ndev_to_prof’:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h:368:13: error: dereferencing pointer to incomplete type
  return &ifp->vif->profile;
             ^
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h: In function â€˜ndev_to_vif’:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h:374:12: error: dereferencing pointer to incomplete type
  return ifp->vif;
            ^

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: use const char * for interface name in brcmf_add_if
Rafał Miłecki [Fri, 17 Jun 2016 10:48:44 +0000 (12:48 +0200)]
brcmfmac: use const char * for interface name in brcmf_add_if

This function can work just fine with const pointer, it only calls
alloc_netdev which take const as well. Moreover it makes this function
more flexible as some cfg80211 callback may provide const char * as
well, e.g. add_virtual_intf. This will be needed for more advanced
interface management.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: fix lockup when removing P2P interface after event timeout
Rafał Miłecki [Fri, 17 Jun 2016 10:29:21 +0000 (12:29 +0200)]
brcmfmac: fix lockup when removing P2P interface after event timeout

Removing P2P interface is handled by sending a proper request to the
firmware. On success firmware triggers an event and driver's handler
removes a matching interface.

However on event timeout we remove interface directly from the cfg80211
callback. Current code doesn't handle this case correctly as it always
assumes rtnl to be unlocked.

Fix it by adding an extra rtnl_locked parameter to functions and calling
unregister_netdevice when needed.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agowireless: ipw2200: fix old-style declaration
Arnd Bergmann [Thu, 16 Jun 2016 13:52:10 +0000 (15:52 +0200)]
wireless: ipw2200: fix old-style declaration

Modern C standards expect the 'inline' keyword to come before the return
type in a declaration, and we get a warning for this with "make W=1":

drivers/net/wireless/intel/ipw2x00/ipw2200.c:4096:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agowireless: brcmsmac: fix old-style declaration
Arnd Bergmann [Thu, 16 Jun 2016 13:52:09 +0000 (15:52 +0200)]
wireless: brcmsmac: fix old-style declaration

Modern C standards expect the 'static' keyword to come first in a
declaration, and we get a warning for this with "make W=1":

drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c:3353:1: error: 'static' is not at beginning of declaration [-Werror=old-style-declaration]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agowireless: airo: rename 'register' variable
Arnd Bergmann [Thu, 16 Jun 2016 13:52:08 +0000 (15:52 +0200)]
wireless: airo: rename 'register' variable

'register' is a keyword in C and cannot be used in place of a
variable name, as shown by this -Wextra warning:

drivers/net/wireless/cisco/airo.c:1105:29: error: 'register' is not at beginning of declaration [-Werror=old-style-declaration]

This replaces the 'register' keyword with a 'reg' identifier in
the declaration, which matches the definition and has the intended
meaning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix AP start problem for newly added interface
Amitkumar Karwar [Thu, 16 Jun 2016 13:22:26 +0000 (18:52 +0530)]
mwifiex: fix AP start problem for newly added interface

It's been observed that if interface type is changed from managed to
__ap, AP can be successfully started. But there is a problem if new
ap interface is added.

The problem got resolved after sending appropriate commands to firmware
in add_interface handler.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix AP unable to start in VHT40 problem
Amitkumar Karwar [Thu, 16 Jun 2016 13:22:25 +0000 (18:52 +0530)]
mwifiex: fix AP unable to start in VHT40 problem

This patch populates secondary channel offset and downloads it to
firmware to fix the problem.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: fix system hang problem after resume
Amitkumar Karwar [Thu, 16 Jun 2016 13:22:24 +0000 (18:52 +0530)]
mwifiex: fix system hang problem after resume

On some platforms, driver is unable to wakeup firmware after system resume
due to a problem at MMC subsystem. Triggering card reset in this case has
a race with card removal from MMC which causes system hang. This patch
resolves the problem by not triggering card reset.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agomwifiex: cancel pending scan during disconnect
Xinming Hu [Thu, 16 Jun 2016 13:22:23 +0000 (18:52 +0530)]
mwifiex: cancel pending scan during disconnect

It is obeserved that sometimes scan operation will block the disconnect
during system suspend. It's ok to cancel ongoing scan in this case. It
reduces unnecessary system suspend delay.

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: factor out mwifiex_cancel_scan
Xinming Hu [Thu, 16 Jun 2016 13:22:22 +0000 (18:52 +0530)]
mwifiex: factor out mwifiex_cancel_scan

This patch creates common function mwifiex_cancel_scan to remove
duplication of code.

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: Fix an issue spotted by KASAN
Ganapathi Bhat [Thu, 16 Jun 2016 13:22:21 +0000 (18:52 +0530)]
mwifiex: Fix an issue spotted by KASAN

When an association command is sent to firmware but the process is
killed before the command response arrives, driver will try to
access bss_desc which is already freed. This issue is fixed by
checking return value of bss_start.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortlwifi: use s8 instead of char
Arnd Bergmann [Wed, 15 Jun 2016 21:30:43 +0000 (23:30 +0200)]
rtlwifi: use s8 instead of char

Compiling the rtlwifi drivers for ARM with gcc -Wextra warns about lots of
incorrect code that results from 'char' being unsigned here, e.g.

realtek/rtlwifi/rc.c:113:18: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8188ee/dm.c:1070:22: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192ce/trx.c:54:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192cu/mac.c:601:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192de/trx.c:53:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192ee/phy.c:1268:12: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192se/rf.c:150:20: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8723be/dm.c:877:29: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8723be/phy.c:386:16: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/dm.c:1514:38: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/phy.c:1558:11: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/phy.c:386:24: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/trx.c:55:12: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/stats.c:31:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]

This patch changes all uses of 'char' in this driver that refer to
8-bit integers to use 's8' instead, which is signed on all architectures.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agolibertas: Add spinlock to avoid race condition
Pavel Andrianov [Wed, 15 Jun 2016 11:34:03 +0000 (15:34 +0400)]
libertas: Add spinlock to avoid race condition

lbs_mac_event_disconnected may free priv->currenttxskb
while lbs_hard_start_xmit accesses to it.
The patch adds a spinlock for mutual exclusion.

Tested on OLPC XO-1 (usb8388) and XO-1.5 (sd8686) with v4.7-rc3.

Confirmed that lbs_mac_event_disconnected is being called on the
station when hostapd on access point is given SIGHUP.

Signed-off-by: Pavel <andrianov@ispras.ru>
Tested-by: James Cameron <quozl@laptop.org>
Acked-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agowlcore: sdio: Fix crash on wlcore_probe_of when failing to parse/map irq
Bruno Herrera [Fri, 10 Jun 2016 00:46:46 +0000 (21:46 -0300)]
wlcore: sdio: Fix crash on wlcore_probe_of when failing to parse/map irq

pdev_data pointer is being freed with kfree but the pointer is not dynamic allocated.

Signed-off-by: Bruno Herrera <bruherrera@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortl8xxxu: tuse %*ph to dump buffers
Andy Shevchenko [Thu, 9 Jun 2016 18:38:49 +0000 (14:38 -0400)]
rtl8xxxu: tuse %*ph to dump buffers

Use %*ph specifier to dump small buffers in hex format instead of doing this
byte-by-byte.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortl8xxxu: Add additional documentation for RX DMA registers
Jes Sorensen [Thu, 9 Jun 2016 18:38:48 +0000 (14:38 -0400)]
rtl8xxxu: Add additional documentation for RX DMA registers

This also renames REG_USB_AGG_{TO,TH} to REG_USB_AGG_{TIMEOUT,THRESH}

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agortl8xxxu: Add bit definitions for REG_USB_SPECIAL_OPTION
Jes Sorensen [Thu, 9 Jun 2016 18:38:47 +0000 (14:38 -0400)]
rtl8xxxu: Add bit definitions for REG_USB_SPECIAL_OPTION

Documentation for enabling USB aggregation and whether to select
interrupt or bulk delivery of interrupt events.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agolibertas_tf: Remove create_workqueue
Bhaktipriya Shridhar [Tue, 7 Jun 2016 20:08:53 +0000 (01:38 +0530)]
libertas_tf: Remove create_workqueue

alloc_workqueue replaces deprecated create_workqueue().

A dedicated workqueue has been used since the workitem (viz
&priv->cmd_work per priv, which maps to lbtf_cmd_work) is involved in
actual command processing and may be used on a memory reclaim path.
The workitems require forward progress under memory pressure and hence,
WQ_MEM_RECLAIM has been set. Since there are only a fixed number of work
items, explicit concurrency limit is unnecessary here.

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agobrcmfmac: slightly simplify building interface combinations
Rafał Miłecki [Tue, 7 Jun 2016 19:10:18 +0000 (21:10 +0200)]
brcmfmac: slightly simplify building interface combinations

This change reorders some operations in brcmf_setup_ifmodes in hope to
make it simpler:
1) It allocates arrays right before filling them. This way it's easier
   to follow requested array length as it's immediately followed by
   code filling it. It's easier to check e.g. why we need 4 entries for
   P2P. Other than that it deduplicates some checks (e.g. for P2P).
2) It reorders code to first prepare limits and then define a new combo.
   Previously this was mixed (e.g. we were setting num of channels
   before preparing limits).
3) It modifies mbss code to use i variable just like other combos do.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agonet: ethernet: ti: cpdma: switch to use genalloc
Grygorii Strashko [Mon, 27 Jun 2016 09:05:11 +0000 (12:05 +0300)]
net: ethernet: ti: cpdma: switch to use genalloc

TI CPDMA currently uses a bitmap for tracking descriptors alloactions
allocations, but The genalloc already handles the same and can be used
as with special memory (SRAM) as with DMA cherent memory chank
(dma_alloc_coherent()). Hence, switch to using genalloc and add
desc_num property for each channel for limitation of max number of
allowed descriptors for each CPDMA channel. This patch do not affect
on net throuput.

Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Tested-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMaxim/driver: Add driver for maxim ds26522
Zhao Qiang [Mon, 27 Jun 2016 01:30:22 +0000 (09:30 +0800)]
Maxim/driver: Add driver for maxim ds26522

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: dwc_eth_qos: use phy_ethtool_{get|set}_link_ksettings
Philippe Reynes [Sat, 25 Jun 2016 21:05:16 +0000 (23:05 +0200)]
net: ethernet: dwc_eth_qos: use phy_ethtool_{get|set}_link_ksettings

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: dwc_eth_qos: use phydev from struct net_device
Philippe Reynes [Sat, 25 Jun 2016 21:05:15 +0000 (23:05 +0200)]
net: ethernet: dwc_eth_qos: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: sxgbe: use phy_ethtool_{get|set}_link_ksettings
Philippe Reynes [Sat, 25 Jun 2016 20:05:27 +0000 (22:05 +0200)]
net: ethernet: sxgbe: use phy_ethtool_{get|set}_link_ksettings

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: sxgbe: use phydev from struct net_device
Philippe Reynes [Sat, 25 Jun 2016 20:05:26 +0000 (22:05 +0200)]
net: ethernet: sxgbe: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: r6040: use phy_ethtool_{get|set}_link_ksettings
Philippe Reynes [Sat, 25 Jun 2016 19:09:02 +0000 (21:09 +0200)]
net: ethernet: r6040: use phy_ethtool_{get|set}_link_ksettings

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: r6040: use phydev from struct net_device
Philippe Reynes [Sat, 25 Jun 2016 19:09:01 +0000 (21:09 +0200)]
net: ethernet: r6040: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: hix5hd2: use phy_ethtool_{get|set}_link_ksettings
Philippe Reynes [Sat, 25 Jun 2016 14:55:13 +0000 (16:55 +0200)]
net: ethernet: hix5hd2: use phy_ethtool_{get|set}_link_ksettings

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: hix5hd2: use phydev from struct net_device
Philippe Reynes [Sat, 25 Jun 2016 14:55:12 +0000 (16:55 +0200)]
net: ethernet: hix5hd2: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phy in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'cpsw-runtime-pm'
David S. Miller [Tue, 28 Jun 2016 12:57:28 +0000 (08:57 -0400)]
Merge branch 'cpsw-runtime-pm'

Grygorii Strashko says:

====================
drivers: net: cpsw: improve runtime pm

This series intended to improve runtime PM and allow CPSW to be
RPM suspended when all ethX netdevices are down.

To achieve above goal it is required to relax runtime PM constraints for
Davinci MDIO which blocks CPSW runtime PM now, because Davinci MDIO is always
powered on during probe and powered off only when it's going to be removed.
- Patches 6-11 implement PM runtime autosuspend for Davinci MDIO, but keep it
disabled by default, because Davinci MDIO is integrated in big set of TI devices
and not all of them verified to work correctly with RPM autosuspend enabled:
 expected to work on SoCs where MDIO is defined as part of CPSW in DT
 (cpsw.c DRA7/am57x, am437x, am335x)
The CPSW need to be fixed before RPM suspended can be allowed:
 - Patches 1-5 ensure that CPSW will not cause L3 errors while it is in RPM
   suspended state.

Davinci MDIO RPM autosuspend can be enabled through sysfs:
 echo 100 > /sys/devices/../48484000.ethernet/48485000.mdio/power/autosuspend_delay_ms

Patches 12 - 15: introduce new compatible string "ti,cpsw-mdio" which is used
then to enable RPM for am335x/am437x/dra7 SoCs.

Tested on am335x, am437x, am572x and k2g (on k2g with RPM disabled for Davinci MDIO)
These changes should not affect on errata i877 implementation on DRA7.

Power measurement on am335x GP EVM:
 Without this series:  547.60 mW total SoC power
 With this series + "ifconfig eth0 down": 477.32 mW Total Soc Power

Changes in v2:
- CPSW ethtool interface updated to use .begin()/.complete() callbacks
- kbuild failure fixed
- davinci_mdio DT updated with proper description of allowed compatible strings
  combinations

Link on v1:
 https://lkml.org/lkml/2016/6/15/362
====================

Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoARM: dts: am335x/am437x/dra7: use new "ti, cpsw-mdio" compat string
Grygorii Strashko [Fri, 24 Jun 2016 18:23:55 +0000 (21:23 +0300)]
ARM: dts: am335x/am437x/dra7: use new "ti, cpsw-mdio" compat string

Add "ti,cpsw-mdio" for am335x/am437x/dra7 SoCs where MDIO is
implemented as part of TI CPSW and, this way, enable PM runtime auto
suspend for Davinci MDIO driver on these paltforms.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: davinci_mdio: enable pm runtime auto for ti cpsw-mdio
Grygorii Strashko [Fri, 24 Jun 2016 18:23:54 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: enable pm runtime auto for ti cpsw-mdio

Use "ti,cpsw-mdio" to enable PM runtime auto-suspend on supported
platforms, where MDIO is implemented as part of TI CPSW.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: davinci_mdio: introduce "ti,cpsw-mdio" compat string
Grygorii Strashko [Fri, 24 Jun 2016 18:23:53 +0000 (21:23 +0300)]
net: davinci_mdio: introduce "ti,cpsw-mdio" compat string

Introduce "ti,cpsw-mdio" compatible string for Davinci MDIO, because
it's required to distinguish the case when MDIO is part of TI CPSW to
enable features supported by TI CPSW (for example, enable PM
management).

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: davinci_mdio: document missed "ti, am4372-mdio" compat string
Grygorii Strashko [Fri, 24 Jun 2016 18:23:52 +0000 (21:23 +0300)]
net: davinci_mdio: document missed "ti, am4372-mdio" compat string

Document missed "ti,am4372-mdio" compat string used for TI am437x SoC
(am4372.dtsi).

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: davinci_mdio: implement pm runtime auto mode
Grygorii Strashko [Fri, 24 Jun 2016 18:23:51 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: implement pm runtime auto mode

Davinci MDIO is always used as slave device which services
read/write requests from MDIO/PHY core. It doesn't use IRQ also.

As result, It's possible to relax PM runtime constraints for Davinci
MDIO and enable it on demand, instead of powering it during probe
and powering off during removal.

Hence, implement PM runtime autosuspend for Davinci MDIO, but keep it
disabled by default, because Davinci MDIO is integrated in big set of
TI devices and not all of them expected to work corectly with RPM
 autosuspend enabled:
- expected to work on SoCs where MDIO is part of TI CPSW
(cpsw.c DRA7/am57x, am437x, am335x, dm814x)
- not verified on Keystone 2 and other SoCs where MDIO is used with TI EMAC IP
(davinci_emac.c:  dm6467-emac, am3517-emac, dm816-emac).

Davinci MDIO RPM autosuspend can be enabled through sysfs:
 echo 100 > /sys/devices/../48484000.ethernet/48485000.mdio/power/autosuspend_delay_ms

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: davinci_mdio: add pm runtime callbacks
Grygorii Strashko [Fri, 24 Jun 2016 18:23:50 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: add pm runtime callbacks

Add PM runtime .runtime_suspend()/.runtime_resume() callbacks and
perform Davinci MDIO enabling/disabling from these callbacks. This
allows to reuse pm_runtime_force_suspend/resume() APIs during System
suspend and required for further implementation of PM runtime
autosuspend.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: davinci_mdio: split reset function on init_clk and enable
Grygorii Strashko [Fri, 24 Jun 2016 18:23:49 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: split reset function on init_clk and enable

The Davinci MDIO MDIO_CONTROL.CLKDIV can be calculated only once
during probe, hence split __davinci_mdio_reset() on
davinci_mdio_init_clk() and davinci_mdio_enable(). Initialize and
save CLKDIV in .probe(). Then just use saved value.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: davinci_mdio: drop suspended and lock fields from mdio_data
Grygorii Strashko [Fri, 24 Jun 2016 18:23:48 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: drop suspended and lock fields from mdio_data

It's not expected Davinci MDIO to be accessible after its suspend
callbacks have been called:
 - all consumers of Davinci MDIO will stop/disconnect phys at Device
suspend stage;
 - all phys are expected to be suspned already by PHY/MDIO core;
 - MDIO locking is done by MDIO Bus code.

Hence, it's safe to drop "suspended" and "lock" fields from mdio_data.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: davinci_mdio: remove pm runtime calls from suspend callbacks
Grygorii Strashko [Fri, 24 Jun 2016 18:23:47 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: remove pm runtime calls from suspend callbacks

PM runtime is disabled when Davinci MDIO .suspend_late() and
.resume_early() callbacks are called. As result, any PM runtime calls here will
be just a nop and can be removed.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: davinci_mdio: do pm runtime initialization later in probe
Grygorii Strashko [Fri, 24 Jun 2016 18:23:46 +0000 (21:23 +0300)]
drivers: net: davinci_mdio: do pm runtime initialization later in probe

Do PM runtime initialization later in probe - this allows to simplify
error handling a bit.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: cpsw: ndev: fix accessing to suspended device
Grygorii Strashko [Fri, 24 Jun 2016 18:23:45 +0000 (21:23 +0300)]
drivers: net: cpsw: ndev: fix accessing to suspended device

The CPSW might be suspended by RPM if all ethX interfaces are down,
but it still could be accesible through net_device_ops interfce. In
this case net_device_ops operations requiring registers access will
cause L3 errors and CPSW crash.

Hence, fix it by adding RPM get/put calls in net_device_ops callbacks
which need to access CPSW registers: .ndo_set_mac_address(),
.ndo_vlan_rx_add_vid(), .ndo_vlan_rx_kill_vid().

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: cpsw: ethtool: fix accessing to suspended device
Grygorii Strashko [Fri, 24 Jun 2016 18:23:44 +0000 (21:23 +0300)]
drivers: net: cpsw: ethtool: fix accessing to suspended device

The CPSW might be suspended by RPM if all ethX interfaces are down,
but it still could be accesible through ethtool interfce. In this case
ethtool operations, requiring registers access, will cause L3 errors and
CPSW crash.

ethtool callbcaks which need to access CPSW registers now:
.set_coalesce(), .get_ethtool_stats(), .set_pauseparam(), .get_regs()

Hence, fix it by adding .begin()/.complete() ethtool callbacks, which
will be called before/after each ethtool operation runs, and do CPSW
RPM handling in these callbacks. That way CPSW will be active while
handling ethtool requests.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: cpsw: remove pm runtime calls from suspend callbacks
Grygorii Strashko [Fri, 24 Jun 2016 18:23:43 +0000 (21:23 +0300)]
drivers: net: cpsw: remove pm runtime calls from suspend callbacks

PM runtime is properly handled in cpsw_ndo_open/stop(), as result it
isn't required to duplicate these calls in .suspend()/.resume()
callbacks. Moreover, it might cause unnecessary RPM resume of CPSW
during System suspend in the case it's already suspended because
all ethX interfaces are down already, before System suspend started.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: cpsw: check return code from pm runtime calls
Grygorii Strashko [Fri, 24 Jun 2016 18:23:42 +0000 (21:23 +0300)]
drivers: net: cpsw: check return code from pm runtime calls

Add missed check of return code from PM runtime get() calls.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: cpsw: fix suspend when all ethX devices are down
Grygorii Strashko [Fri, 24 Jun 2016 18:23:41 +0000 (21:23 +0300)]
drivers: net: cpsw: fix suspend when all ethX devices are down

The cpsw_suspend() could trigger L3 error and CPSW will stop
functioning if System enters suspend when all ethX net-devices are
down - in this case CPSW could be already suspended by PM runtime, but
cpsw_suspend() will try to call soft_reset_slave() unconditionally
and access CPSW registers.

Hence, fix it by moving soft_reset_slave() from cpsw_suspend() to
cpsw_slave_stop(). This way slave ports will be reset when CPSW is
active and will be in proper state during Suspend.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'stmmac-next'
David S. Miller [Tue, 28 Jun 2016 12:54:28 +0000 (08:54 -0400)]
Merge branch 'stmmac-next'

Giuseppe Cavallaro says:

====================
stmmac: rework and enhance the PCS support

The 3.xx and 4.xx synopsys gmacs have a very similar
PCS embedded module and they share almost the same registers;
for example:
  AN_Control, AN_Status, AN_Advertisement, AN_Link_Partner_Ability,
  AN_Expansion, TBI_Extended_Status.

Just the RGMII/SMII Control/Status register differs.

So these patches aim to reorganize and enhance the PCS support;
to do that, some small inline functions have been provided and
also some rework to the PCS ISR part has been done.

In the end, the SGMII for MAC2MAC connection has been introduced.

All patches have been built on top of net-next git and, as for
the previous version, not fully tested.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: stmmac: add port selection programming
Giuseppe CAVALLARO [Fri, 24 Jun 2016 13:16:26 +0000 (15:16 +0200)]
drivers: net: stmmac: add port selection programming

In case of SGMII more, for example when a MAC2MAC connection
is needed, the port selection bits (inside the MAC configuration
registers) have to be programmed according to the link selected.
So the patch adds a new DT parameter to pass the port selection
and to programmed related PCS and CORE to use it.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: stmmac: rework core ISR to better manage PCS and PMT
Giuseppe CAVALLARO [Fri, 24 Jun 2016 13:16:25 +0000 (15:16 +0200)]
drivers: net: stmmac: rework core ISR to better manage PCS and PMT

By default, all gmac cores disable the PCS block and always
enable the PMT.

Note that this is done in a different way by 3.x and 4.x cores.

With this rework, PCS and PMT interrupt masks can be driven by
parameters now moved inside the mac_device_info structure
and the settings follow what the HW capability register reports.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: stmmac: reworking the PCS code.
Giuseppe CAVALLARO [Fri, 24 Jun 2016 13:16:24 +0000 (15:16 +0200)]
drivers: net: stmmac: reworking the PCS code.

The 3.xx and 4.xx synopsys gmacs have a very similar
PCS embedded module and they share almost the same registers:
for example:
  AN_Control, AN_Status, AN_Advertisement, AN_Link_Partner_Ability,
  AN_Expansion, TBI_Extended_Status.

Just the RGMII/SMII Control/Status register differs.

So This patch aims to reorganize and enhance the PCS support.
It removes the existent support from the dwmac1000/dwmac4_core.c
moving basic PCS functions inside a new file called: stmmac_pcs.h.

The patch also reviews the available APIs to be better shared among
different hardware and easily enhanced to support new features.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoof_mdio: select fixed phy support unconditionally
Arnd Bergmann [Fri, 24 Jun 2016 09:24:08 +0000 (11:24 +0200)]
of_mdio: select fixed phy support unconditionally

Calling the fixed-phy functions when CONFIG_FIXED_PHY=m as a previous
change tried cannot work if the caller is in built-in code:

drivers/of/built-in.o: In function `of_phy_register_fixed_link':
of_reserved_mem.c:(.text+0x85e0): undefined reference to `fixed_phy_register'

Making of_mdio depend on 'FIXED_PHY || !FIXED_PHY' would solve this
dependency by enforcing that OF_MDIO itself becomes a loadable module
when FIXED_PHY=y, but that creates a different dependency as it
breaks any built-in ethernet driver that uses of_mdio.

Making FIXED_PHY a bool option also cannot work, since it depends on
PHYLIB, which again is tristate.

This version now uses 'select FIXED_PHY' to ensure that the fixed-phy
portion of of_mdio is not optional. The main downside of this is
a small increase in code size for cases that do not need fixed phy
support, but it should avoid all of the link-time problems.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d1bd330a229f ("of_mdio: Enable fixed PHY support if driver is a module")
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agocaif: Remove unneeded header file
Amitoj Kaur Chawla [Fri, 24 Jun 2016 06:23:54 +0000 (11:53 +0530)]
caif: Remove unneeded header file

Drop redundant include of moduleparam.h

The Coccinelle semantic patch used to make this change is as follows:
@ includesmodule @
@@

#include <linux/module.h>

@ depends on includesmodule @
@@

- #include <linux/moduleparam.h>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: diag: Add support to filter on device index
David Ahern [Fri, 24 Jun 2016 01:42:51 +0000 (18:42 -0700)]
net: diag: Add support to filter on device index

Add support to inet_diag facility to filter sockets based on device
index. If an interface index is in the filter only sockets bound
to that index (sk_bound_dev_if) are returned.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: dnet: use phy_ethtool_{get|set}_link_ksettings
Philippe Reynes [Thu, 23 Jun 2016 21:48:59 +0000 (23:48 +0200)]
net: ethernet: dnet: use phy_ethtool_{get|set}_link_ksettings

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: dnet: use phydev from struct net_device
Philippe Reynes [Thu, 23 Jun 2016 21:48:58 +0000 (23:48 +0200)]
net: ethernet: dnet: use phydev from struct net_device

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'sfp-infra'
David S. Miller [Mon, 27 Jun 2016 14:41:02 +0000 (10:41 -0400)]
Merge branch 'sfp-infra'

Russell King says:

====================
Initial SFP support patches

Please review and merge this initial patch set, which is part of a
larger set previously posted adding SFP support to phy and mvneta.

This initial set are focused on cleaning up and reorganising the
fixed-phy code to allow the core software-phy code to be re-used.

These are based on net-next.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agophy: improve safety of fixed-phy MII register reading
Russell King [Thu, 23 Jun 2016 13:50:25 +0000 (14:50 +0100)]
phy: improve safety of fixed-phy MII register reading

There is no prevention of a concurrent call to both fixed_mdio_read()
and fixed_phy_update_state(), which can result in the state being
modified while it's being inspected.  Fix this by using a seqcount
to detect modifications, and memcpy()ing the state.

We remain slightly naughty here, calling link_update() and updating
the link status within the read-side loop - which would need rework
of the design to change.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agophy: generate swphy registers on the fly
Russell King [Thu, 23 Jun 2016 13:50:20 +0000 (14:50 +0100)]
phy: generate swphy registers on the fly

Generate software phy registers as and when requested, rather than
duplicating the state in fixed_phy.  This allows us to eliminate
the duplicate storage of of the same data, which is only different
in format.

As fixed_phy_update_regs() no longer updates register state, rename
it to fixed_phy_update().

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agophy: separate swphy state validation from register generation
Russell King [Thu, 23 Jun 2016 13:50:15 +0000 (14:50 +0100)]
phy: separate swphy state validation from register generation

Separate out the generation of MII registers from the state validation.
This allows us to simplify the error handing in fixed_phy() by allowing
earlier error detection.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agophy: convert swphy register generation to tabular form
Russell King [Thu, 23 Jun 2016 13:50:10 +0000 (14:50 +0100)]
phy: convert swphy register generation to tabular form

Convert the swphy register generation to tabular form which allows us
to eliminate multiple switch() statements.  This results in a smaller
object code size, more efficient, and easier to add support for faster
speeds.

Before:

Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         00000164  00000000  00000000  00000034  2**2

   text    data     bss     dec     hex filename
    388       0       0     388     184 swphy.o

After:

Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         000000fc  00000000  00000000  00000034  2**2
  5 .rodata       00000028  00000000  00000000  00000138  2**2

   text    data     bss     dec     hex filename
    324       0       0     324     144 swphy.o

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agophy: move fixed_phy MII register generation to a library
Russell King [Thu, 23 Jun 2016 13:50:05 +0000 (14:50 +0100)]
phy: move fixed_phy MII register generation to a library

Move the fixed_phy MII register generation to a library to allow other
software phy implementations to use this code.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'linux-can-next-for-4.8-20160623' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Mon, 27 Jun 2016 14:33:42 +0000 (10:33 -0400)]
Merge tag 'linux-can-next-for-4.8-20160623' of git://git./linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2016-06-17

this is a pull request of 4 patches for net-next/master.

Arnd Bergmann's patch fixes a regresseion in af_can introduced in
linux-can-next-for-4.8-20160617. There are two patches by Ramesh
Shanmugasundaram, which add CAN-2.0 support to the rcar_canfd driver.
And a patch by Ed Spiridonov that adds better error diagnoses messages
to the Ed Spiridonov driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>