GitHub/LineageOS/android_kernel_motorola_exynos9610.git
14 years agoUSB: s3c-hsotg: Add support for external USB clock
Maurus Cuelenaere [Mon, 19 Jul 2010 08:40:50 +0000 (09:40 +0100)]
USB: s3c-hsotg: Add support for external USB clock

The PLL that drives the USB clock supports 3 input clocks: 12, 24 and 48Mhz.
This patch adds support to the USB driver for setting the correct register bit
according to the given clock.

This depends on the following patch:
[PATCH] ARM: S3C64XX: Add USB external clock definition

Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Fix OUT packet request retry
Ben Dooks [Mon, 19 Jul 2010 08:40:49 +0000 (09:40 +0100)]
USB: s3c-hsotg: Fix OUT packet request retry

If there is more data in the request than we could fit into a single
hardware request, then check when the OutDone event is received if
we have more data, and if so, schedule the new data instead of trying
to complete the request (and in the case of EP0, sending a 0 packet
in the middle of a transfer).

Also, move the debug message about the current transfer state before
the warning about a bad transfer.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Fix the OUT EP0 limit
Ben Dooks [Mon, 19 Jul 2010 08:40:48 +0000 (09:40 +0100)]
USB: s3c-hsotg: Fix the OUT EP0 limit

The EP0 out limit is the same as the IN limit, so make them the same.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Fix max EP0 IN request length
Ben Dooks [Mon, 19 Jul 2010 08:40:47 +0000 (09:40 +0100)]
USB: s3c-hsotg: Fix max EP0 IN request length

The maximum length for any EP0 IN request on EP0 is 127 bytes, not 128
as the driver currently has it.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Check for new request before enqueing new setup
Ben Dooks [Mon, 19 Jul 2010 08:40:46 +0000 (09:40 +0100)]
USB: s3c-hsotg: Check for new request before enqueing new setup

Before trying a new setup transaction after getting an EP0 in complete
interrupt, check that the driver did not try and send more EP0 IN data
before enqueing a new setup transaction.

This fixes a bug where we cannot send all of the IN data in one go
so split the transfer, but then fail to send all the data as we start
waiting for a new OUT transaction

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Only load packet per fifo write
Ben Dooks [Mon, 19 Jul 2010 08:40:45 +0000 (09:40 +0100)]
USB: s3c-hsotg: Only load packet per fifo write

Limit the IN FIFO write to a single packet per attempt at writing,
as per the specifications and ensure that we don't return fifo-full
so that we can continue writing packets if we have the space.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Add initial detection and setup for dedicated FIFO mode
Ben Dooks [Mon, 19 Jul 2010 08:40:44 +0000 (09:40 +0100)]
USB: s3c-hsotg: Add initial detection and setup for dedicated FIFO mode

Add support for the dedicated FIFO mode on newer SoCs such as the S5PV210
partly to improve support and to fix the bug where any non-EP0 IN endpoint
requires its own FIFO allocation.

To fix this, we ensure that any non-zero IN endpoint is given a TXFIFO
using the same allocation method as the periodic case (all our current
hardware has enough FIFOs and FIFO memory for a 1:1 mapping) and ensure
that the necessary transmission done interrupt is enabled.

The default settings from reset for the core point all EPs at FIFO0,
used for the control endpoint. However, the controller documentation
states that all IN endpoints _must_ have a unique FIFO to avoid any
contention during transmission.

Note, this leaves us with a large IN FIFO for EP0 (which re-uses the
old NPTXFIFO) for an endpoint which cannot shift more than a pair of
packets at a time... this is a waste, but it looks like we cannot
re-allocate space to the individual IN FIFOs as they are already
maxed out (to be confirmed).

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Re-initialise all FIFOs on USB bus reset
Ben Dooks [Mon, 19 Jul 2010 08:40:43 +0000 (09:40 +0100)]
USB: s3c-hsotg: Re-initialise all FIFOs on USB bus reset

The USB documentation suggest that the FIFOs should be reset when a
bus reset event happens. Use the s3c_hsotg_init_fifo() to ensure that
the FIFO layout is correct and that the FIFOs are flushed before
acknowledging the reset.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Avoid overwriting contents of perodic in 'fifo'
Ben Dooks [Mon, 19 Jul 2010 08:40:42 +0000 (09:40 +0100)]
USB: s3c-hsotg: Avoid overwriting contents of perodic in 'fifo'

In shared fifo mode (used on older SoCs) the periodic in fifo beahves
much more like a packet buffer, discarding old data when writing new
data. Avoid this by ensuring that we do not load new transactions in
when there is data sitting already in the FIFO.

Note, this may not be an observed bug, we are fixing the case that this
may happen.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: The NPTX/PTX FIFO sizes are in words, not bytes
Ben Dooks [Mon, 19 Jul 2010 08:40:41 +0000 (09:40 +0100)]
USB: s3c-hsotg: The NPTX/PTX FIFO sizes are in words, not bytes

Fix a problem where we have been underestimating the space available in
the IN PTX/NPTX FIFOs by assuming that they where simply word aligned
instead of in number-of-words. This means all length calculations need
to be multiplied-by-4.

Note, we do not change the information about fifo size or start addresses
available to userspace as we assume the user can multiply by four easily
and is already knows these values are in words.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: s3c-hsotg: Increase TX fifo limit
Ben Dooks [Mon, 19 Jul 2010 08:40:40 +0000 (09:40 +0100)]
USB: s3c-hsotg: Increase TX fifo limit

Up the FIFO size for the TX to 1024 entries, as this now seems to work
with all the cores. This fixes a problem when using large packets on
a core with MPS set to 512 can hang due to insufficient space for the
writes.

The hang arises due to getting the non-periodic FIFO empty IRQ but
not being able to satisfy any requests since there is never enough
space to write 512 bytes into the buffer. This means we end up with
a stream of interrupt requests.

It is easier to up the TX FIFO to fill the space we left for it
than to try and fix the positions in the code where we should have
limited the max-packet size to < TXFIFOSIZE, since the TXFIFOSIZE
depends on how the TX FIFOs have been setup.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agousb: host: sl811-hcd: check kzalloc() result
Kulikov Vasiliy [Fri, 16 Jul 2010 16:15:06 +0000 (20:15 +0400)]
usb: host: sl811-hcd: check kzalloc() result

If kzalloc() fails exit with -ENOMEM.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: storage: optional SCSI WRITE FUA bit
Andy Shevchenko [Thu, 22 Jul 2010 14:53:56 +0000 (17:53 +0300)]
USB: gadget: storage: optional SCSI WRITE FUA bit

MS Windows mounts removable storage in "Removal optimized mode" by
default. All the writes to the media are synchronous which is achieved
by setting FUA (Force Unit Access) bit in SCSI WRITE(10,12) commands.
This prevents I/O requests aggregation in block layer dramatically
decreasing performance.

This patch brings an option to accept or ignore mentioned bit
 a) via specifying module parameter "nofua", or
 b) through sysfs entry
/sys/devices/platform/_UDC_/gadget/gadget-lunX/nofua
(_UDC_ is the name of the USB Device Controller driver)

Patch is based on the work that was done by Denis Karpov for Maemo 5
platform.

Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Denis Karpov <ext-denis.2.karpov@nokia.com>
Cc: Adrian Hunter <adrian.hunter@nokia.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agousb: gadget: storage: strict coversion of 'ro' parameter
Andy Shevchenko [Thu, 22 Jul 2010 08:58:47 +0000 (11:58 +0300)]
usb: gadget: storage: strict coversion of 'ro' parameter

Bring a strict way to get the 'ro' parameter from the user.

The patch followed by this one adds another boolean parameter. To be consistent
Michał Nazarewicz proposed to use simple_strtol() in both cases (correspondend
discussion in LKML [1]). Due to simple_strtol() doesn't return error in a good
way and we have a boolean parameter the strict_strtoul() is used.

[1] http://lkml.org/lkml/2010/7/14/169

Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: Isoc urb enqueue
Andiry Xu [Thu, 22 Jul 2010 22:23:52 +0000 (15:23 -0700)]
USB: xHCI: Isoc urb enqueue

Enable isochronous urb enqueue.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: allocate bigger ring for isochronous endpoint
Andiry Xu [Thu, 22 Jul 2010 22:23:47 +0000 (15:23 -0700)]
USB: xHCI: allocate bigger ring for isochronous endpoint

Isochronous endpoint needs a bigger size of transfer ring. Isochronous URB
consists of multiple packets, each packet needs a isoc td to carry, and
there will be multiple trbs inserted to the ring at one time. One segment
is too small for isochronous endpoints, and it will result in
room_on_ring() check failure and the URB is failed to enqueue.

Allocate bigger ring for isochronous endpoint. 8 segments should be enough.
This will be replaced with dynamic ring expansion in the future.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: Isochronous transfer implementation
Andiry Xu [Thu, 22 Jul 2010 22:23:39 +0000 (15:23 -0700)]
USB: xHCI: Isochronous transfer implementation

This patch implements isochronous urb enqueue and interrupt handler part.

When an isochronous urb is passed to xHCI driver, first check the transfer
ring to guarantee there is enough room for the whole urb. Then update the
start_frame and interval field of the urb. Always assume URB_ISO_ASAP
is set, and never use urb->start_frame as input.

The number of isoc TDs is equal to urb->number_of_packets. One isoc TD is
consumed every Interval. Each isoc TD consists of an Isoch TRB chained to
zero or more Normal TRBs.

Call prepare_transfer for each TD to do initialization; then calculate the
number of TRBs needed for each TD. If the data required by an isoc TD is
physically contiguous (not crosses a page boundary), then only one isoc TRB
is needed; otherwise one or more additional normal TRB shall be chained to
the isoc TRB by the host.

Set TRB_IOC to the last TRB of each isoc TD. Do not ring endpoint doorbell
to start xHC procession until all the TDs are inserted to the endpoint
transer ring.

In irq handler, update urb status and actual_length, increase
urb_priv->td_cnt. When all the TDs are completed(td_cnt is equal to
urb_priv->length), giveback the urb to usbcore.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: Introduce urb_priv structure
Andiry Xu [Thu, 22 Jul 2010 22:23:31 +0000 (15:23 -0700)]
USB: xHCI: Introduce urb_priv structure

Add urb_priv data structure to xHCI driver. This structure allows multiple
xhci TDs to be linked to one urb, which is essential for isochronous
transfer. For non-isochronous urb, only one TD is needed for one urb;
for isochronous urb, the TD number for the urb is equal to
urb->number_of_packets.

The length field of urb_priv indicates the number of TDs in the urb.
The td_cnt field indicates the number of TDs already processed by xHC.
When td_cnt matches length, the urb can be given back to usbcore.

When an urb is dequeued or cancelled, add all the unprocessed TDs to the
endpoint's cancelled_td_list. When process a cancelled TD, increase
td_cnt field. When td_cnt equals urb_priv->length, giveback the
cancelled urb.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: Missed Service Error Event process
Andiry Xu [Thu, 22 Jul 2010 22:23:25 +0000 (15:23 -0700)]
USB: xHCI: Missed Service Error Event process

This patch adds mechanism to process Missed Service Error Event.
Sometimes the xHC is unable to process the isoc TDs in time, it will
generate Missed Service Error Event. In this case some TDs on the ring are
not processed and missed. When encounter a Missed Servce Error Event, set
the skip flag of the ep, and process the missed TDs until reach the next
processed TD, then clear the skip flag.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: adds new cases to trb_comp_code switch
Andiry Xu [Thu, 22 Jul 2010 22:23:20 +0000 (15:23 -0700)]
USB: xHCI: adds new cases to trb_comp_code switch

This patch adds new cases to trb_comp_code switch, and moves
the switch judgment ahead of fetching td.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: remove redundant print messages
Andiry Xu [Thu, 22 Jul 2010 22:23:15 +0000 (15:23 -0700)]
USB: xHCI: remove redundant print messages

Remove redundant print messages in the interrupt context.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB xHCI: handle_tx_event() refactor: process_bulk_intr_td
Andiry Xu [Thu, 22 Jul 2010 22:23:08 +0000 (15:23 -0700)]
USB xHCI: handle_tx_event() refactor: process_bulk_intr_td

This patch moves the bulk and interrupt td processing part in
handle_tx_event() into a separate function process_bulk_intr_td().

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: handle_tx_event() refactor: process_ctrl_td
Andiry Xu [Thu, 22 Jul 2010 22:23:03 +0000 (15:23 -0700)]
USB: xHCI: handle_tx_event() refactor: process_ctrl_td

This patch moves the ctrl td processing part in handle_tx_event()
into a separate function process_ctrl_td().

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xHCI: handle_tx_event() refactor: finish_td
Andiry Xu [Thu, 22 Jul 2010 22:22:55 +0000 (15:22 -0700)]
USB: xHCI: handle_tx_event() refactor: finish_td

This patch moves the td universal processing part in handle_tx_event()
into a separate function finish_td().

if finish_td() returns 1, it indicates the urb can be given back.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: option: Huawei ETS 1220 support added
Pavel Kazlou [Thu, 22 Jul 2010 00:22:20 +0000 (03:22 +0300)]
USB: option: Huawei ETS 1220 support added

The patch adds Huawei ETS 1220 product id into the list of supported
devices in 'option' usb serial driver.

Signed-off-by: Pavel Kazlou <p.i.kazlou@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB delay init quirk for logitech Harmony 700-series devices
Phil Dibowitz [Wed, 21 Jul 2010 22:05:01 +0000 (00:05 +0200)]
USB delay init quirk for logitech Harmony 700-series devices

The Logitech Harmony 700 series needs an extra delay during
initialization.  This patch adds a USB quirk which enables such a delay
and adds the device to the quirks list.

Signed-off-by: Phil Dibowitz <phil@ipom.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: resizing usbmon binary interface buffer causes protection faults
Steven Robertson [Wed, 21 Jul 2010 20:38:44 +0000 (16:38 -0400)]
USB: resizing usbmon binary interface buffer causes protection faults

Enlarging the buffer size via the MON_IOCT_RING_SIZE ioctl causes
general protection faults. It appears the culprit is an incorrect
argument to mon_free_buff: instead of passing the size of the current
buffer being freed, the size of the new buffer is passed.

Use the correct size argument to mon_free_buff when changing the size of
the buffer.

Signed-off-by: Steven Robertson <steven@strobe.cc>
Acked-by: Pete Zaitcev <zaitcev@redhat.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: functionfs: stale Makefile entry removed
Michal Nazarewicz [Mon, 19 Jul 2010 09:47:04 +0000 (11:47 +0200)]
USB: gadget: functionfs: stale Makefile entry removed

Removed entry referencing g_eth_ffs.c file from Makefile.
The file never existed and the line was a leftover from a
developing process.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: remove dead code in the periodic scheduler
Alan Stern [Wed, 14 Jul 2010 15:03:57 +0000 (11:03 -0400)]
USB: EHCI: remove dead code in the periodic scheduler

This patch (as1409) removes some dead code from the ehci-hcd
scheduler.  Thanks to the previous patch in this series, stream->depth
is no longer used.  And stream->start and stream->rescheduled
apparently have not been used for quite a while, except in some
statistics-reporting code that never gets invoked.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: reorganize isochronous scheduler routine
Alan Stern [Wed, 14 Jul 2010 15:03:53 +0000 (11:03 -0400)]
USB: EHCI: reorganize isochronous scheduler routine

This patch (as1408) rearranges the scheduling code in ehci-hcd, partly
to improve its structure, but mainly to change the way it works.
Whether or not a transfer exceeds the hardware schedule length will
now be determined by looking at the last frame the transfer would use,
instead of the first available frame following the end of the transfer.

The benefit of this change is that it allows the driver to accept
valid URBs which would otherwise be rejected.  For example, suppose
the schedule length is 1024 frames, the endpoint period is 256 frames,
and a four-packet URB is submitted.  The four transfers would occupy
slots that are 0, 256, 512, and 768 frames past the current frame
(plus an extra slop factor).  These don't exceed the 1024-frame limit,
so the URB should be accepted.  But the current code notices that the
next available slot would be 1024 frames (plus slop) in the future,
which is beyond the limit, and so the URB is rejected unnecessarily.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: add missing frame -> microframe conversion
Alan Stern [Wed, 14 Jul 2010 15:03:46 +0000 (11:03 -0400)]
USB: EHCI: add missing frame -> microframe conversion

This patch (as1407) fixes a bug in ehci-hcd's isochronous scheduler.
All its calculations should be done in terms of microframes, but for
full-speed devices, sched->span is stored in frames.  It needs to be
converted.

This fix is liable to expose problems in other drivers.  The old code
would accept URBs that should not have been accepted, so drivers have
had no reason to avoid submitting URBs that exceeded the maximum
schedule length.  In an attempt to partially compensate for this, the
patch also adjusts the schedule length from a minimum of 256 frames up
to a minimum of 512 frames.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: simplify remainder computations
Alan Stern [Wed, 14 Jul 2010 15:03:36 +0000 (11:03 -0400)]
USB: EHCI: simplify remainder computations

This patch (as1406) adds a micro-optimization to ehci-hcd's scheduling
code.  Instead of computing remainders with respect to the schedule
length, use bitwise-and (which is quicker).  We know that the schedule
length will always be a power of two, but the compiler doesn't have
this information.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: remove PCI assumption
Alan Stern [Wed, 14 Jul 2010 15:03:23 +0000 (11:03 -0400)]
USB: EHCI: remove PCI assumption

This patch (as1405) fixes a small bug in ehci-hcd's isochronous
scheduler.  Not all EHCI controllers are PCI, and the code shouldn't
assume that they are.  Instead, introduce a special flag for
controllers which need to delay iso scheduling for full-speed devices
beyond the scheduling threshold.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Sarah Sharp <sarah.a.sharp@linux.intel.com>
CC: David Brownell <david-b@pacbell.net>
CC: stable <stable@kernel.org>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
14 years agoUSB: xHCI: Supporting MSI/MSI-X
Dong Nguyen [Wed, 21 Jul 2010 23:56:08 +0000 (16:56 -0700)]
USB: xHCI: Supporting MSI/MSI-X

Enable MSI/MSI-X supporting in xhci driver.

Provide the mechanism to fall back using MSI and Legacy IRQs
if MSI-X IRQs register failed.

Signed-off-by: Dong Nguyen <Dong.Nguyen@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>,
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: otg/ulpi: extend the generic ulpi driver.
Igor Grinberg [Thu, 15 Jul 2010 13:00:16 +0000 (16:00 +0300)]
USB: otg/ulpi: extend the generic ulpi driver.

1) Introduce ulpi specific flags for control of the ulpi phy
2) Extend the generic ulpi driver with support for Function and
Interface control of upli phy
3) Update the platforms using the generic ulpi driver with new ulpi
flags
4) Remove the otg control flags not in use

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: otg/ulpi: add support for SMSC USB3319 ulpi phy
Igor Grinberg [Thu, 15 Jul 2010 13:00:15 +0000 (16:00 +0300)]
USB: otg/ulpi: add support for SMSC USB3319 ulpi phy

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: otg/ulpi: remove unused macro
Igor Grinberg [Thu, 15 Jul 2010 13:00:14 +0000 (16:00 +0300)]
USB: otg/ulpi: remove unused macro

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: otg/ulpi.c : fix register write
Eric Bénard [Thu, 15 Jul 2010 07:20:19 +0000 (09:20 +0200)]
USB: otg/ulpi.c : fix register write

ulpi_set_vbus and ulpi_set_flags are using ULPI_SET(register) to write
to the PHY's registers, which means we can only set bits in the PHY's
register and not clear them.
By directly using the address of the register without any offset, we
now get the expected behaviour for these functions.

Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: io_ti.c: don't return 0 if writing the download record failed
Roel Kluin [Tue, 20 Jul 2010 22:29:08 +0000 (15:29 -0700)]
USB: io_ti.c: don't return 0 if writing the download record failed

If the write download record failed we shouldn't return 0.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: host: Remove dead CONFIG_ARCH_KARO
Christian Dietrich [Tue, 20 Jul 2010 07:08:01 +0000 (09:08 +0200)]
USB: host: Remove dead CONFIG_ARCH_KARO

CONFIG_ARCH_KARO doesn't exist in Kconfig and is never defined anywhere
else, therefore removing all references for it from the source code.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: serial: enable async suspend for usb serial port device
Ming Lei [Tue, 13 Jul 2010 15:56:24 +0000 (23:56 +0800)]
USB: serial: enable async suspend for usb serial port device

Usb serial port device is child of its usb interface device, so
we can enable async suspend of usb serial port device to speedup
system suspend.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: musb: forward debug mode feature to gadget
stephane duverger [Mon, 12 Jul 2010 16:43:47 +0000 (18:43 +0200)]
USB: musb: forward debug mode feature to gadget

This is a patch for the musb usb controller.

It allows forwarding of the debug mode feature to its gadget in order
to be able to act as an ehci debug device.

This patch has been tested on an IGEPv2 board running a 2.6.35-rc1
kernel.

Signed-off-by: Stephane Duverger <stephane.duverger@gmail.com>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI Debug Port Device Gadget
stephane duverger [Mon, 12 Jul 2010 16:37:53 +0000 (18:37 +0200)]
USB: EHCI Debug Port Device Gadget

This is a patch that implements an USB EHCI Debug Device using the
Gadget API. This patch applies to a 2.6.35-rc3 kernel.

The gadget needs a compliant usb controller that forwards the
USB_DEVICE_DEBUG_MODE feature to its gadget.

The gadget provides two configuration modes, one that only printk() the
received data, and one that exposes a serial device to userland
(/dev/ttyGSxxx).

The gadget has been tested on an IGEPv2 board running a 2.6.35-rc1
kernel. The debug port was fed on the host side by a 2.6.34 kernel.

Signed-off-by: Stephane Duverger <stephane.duverger@gmail.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: Remove unnecessary casts of private_data
Joe Perches [Mon, 12 Jul 2010 20:50:11 +0000 (13:50 -0700)]
USB: gadget: Remove unnecessary casts of private_data

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: misc: Remove unnecessary casts of private_data
Joe Perches [Mon, 12 Jul 2010 20:50:12 +0000 (13:50 -0700)]
USB: misc: Remove unnecessary casts of private_data

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: usb-skeleton: Remove unnecessary casts of private_data
Joe Perches [Mon, 12 Jul 2010 20:50:13 +0000 (13:50 -0700)]
USB: usb-skeleton: Remove unnecessary casts of private_data

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: autoconvert trivial BKL users to private mutex
Arnd Bergmann [Sun, 11 Jul 2010 21:18:56 +0000 (23:18 +0200)]
USB: autoconvert trivial BKL users to private mutex

All these files use the big kernel lock in a trivial
way to serialize their private file operations,
typically resulting from an earlier semi-automatic
pushdown from VFS.

None of these drivers appears to want to lock against
other code, and they all use the BKL as the top-level
lock in their file operations, meaning that there
is no lock-order inversion problem.

Consequently, we can remove the BKL completely,
replacing it with a per-file mutex in every case.
Using a scripted approach means we can avoid
typos.

file=$1
name=$2
if grep -q lock_kernel ${file} ; then
    if grep -q 'include.*linux.mutex.h' ${file} ; then
            sed -i '/include.*<linux\/smp_lock.h>/d' ${file}
    else
            sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file}
    fi
    sed -i ${file} \
        -e "/^#include.*linux.mutex.h/,$ {
                1,/^\(static\|int\|long\)/ {
                     /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);

} }"  \
    -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
    -e '/[      ]*cycle_kernel_lock();/d'
else
    sed -i -e '/include.*\<smp_lock.h\>/d' ${file}  \
                -e '/cycle_kernel_lock()/d'
fi

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agousb: storage: freecom: Fixed several coding style issues.
Martin Enderleit [Sat, 10 Jul 2010 14:50:12 +0000 (16:50 +0200)]
usb: storage: freecom: Fixed several coding style issues.

Fixed several coding style issues in freecom.c.

Signed-off-by: Martin Enderleit <menderleit@gmail.com>
Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Cc: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: musb: do not override DMA mode in channel program
Anand Gadiyar [Thu, 8 Jul 2010 11:04:55 +0000 (16:34 +0530)]
USB: musb: do not override DMA mode in channel program

There is no reason for the DMA channel program to override the
DMA mode passed down by its caller. Use the passed parameter
directly, and let the caller handle the decision on which mode
is to be used.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: musb: Kill board specific pinmux from driver file
Anand Gadiyar [Thu, 8 Jul 2010 11:04:54 +0000 (16:34 +0530)]
USB: musb: Kill board specific pinmux from driver file

This pin-muxing is best done in the board files. The driver should
not do this explicitly.

Also, this code causes a warning to be thrown when OMAP2430 and OMAP3/4
support are enabled in the same kernel.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: ehci_omap: fix device detect issue with modules
Ajay Kumar Gupta [Thu, 8 Jul 2010 08:33:02 +0000 (14:03 +0530)]
USB: ehci_omap: fix device detect issue with modules

Currently devices don't get detected automatically if the ehci
module is inserted 2nd time onward. We need to disconnect and
reconnect the device for it to get detected and enumerated.

Resetting the USB PHY using PHY reset comamnd over ULPI fixes
this issue. Tested on OMAP3EVM.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: ulpi: fix compilation warning
Ajay Kumar Gupta [Thu, 8 Jul 2010 08:33:01 +0000 (14:03 +0530)]
USB: ulpi: fix compilation warning

Fixes below compilation warning from ulpi.h

include/linux/usb/ulpi.h:145:
        warning: 'struct otg_io_access_ops' declared inside parameter list
include/linux/usb/ulpi.h:145:
         warning: its scope is only this definition or declaration,
         which is probably not what you want

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: musb: fix compilation warning in host only mode
Ajay Kumar Gupta [Thu, 8 Jul 2010 08:33:00 +0000 (14:03 +0530)]
USB: musb: fix compilation warning in host only mode

Fixes below compilation warning when host only configuration is
selected.
drivers/usb/musb/musb_core.c: In function 'musb_stage0_irq':
drivers/usb/musb/musb_core.c:711: warning: unused variable 'mbase'

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: musb: use correct register widths in register dumps
Anand Gadiyar [Thu, 8 Jul 2010 08:32:59 +0000 (14:02 +0530)]
USB: musb: use correct register widths in register dumps

DMA_ADDR and DMA_COUNT are 32-bit registers, not 16-bit.

Marking them as 16-bit in the table causes only the lower
16-bits to be dumped and this is misleading.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: core: hcd-pci: use for_each_pci_dev()
Kulikov Vasiliy [Sat, 3 Jul 2010 16:04:47 +0000 (20:04 +0400)]
USB: core: hcd-pci: use for_each_pci_dev()

Use for_each_pci_dev() to simplify the code.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: serial: io_ti: Don't return 0 if writing the download record failed
Roel Kluin [Thu, 1 Jul 2010 22:36:43 +0000 (00:36 +0200)]
USB: serial: io_ti: Don't return 0 if writing the download record failed

If the write download record failed we shouldn't return 0.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: storage_common: comments updated
Michal Nazarewicz [Mon, 5 Jul 2010 14:38:04 +0000 (16:38 +0200)]
USB: gadget: storage_common: comments updated

Updated comment to describe why printing macros are needed even
thought they are copied form the composite.h.  Also, made multiline
comments follow the coding standard.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: compilation issue: missing TASK_INTERRUPTIBLE
stephane duverger [Tue, 29 Jun 2010 14:57:25 +0000 (16:57 +0200)]
USB: gadget: compilation issue: missing TASK_INTERRUPTIBLE

Here is the patch for the following issue:

drivers/usb/gadget/u_serial.c: In function ‘gs_start_tx’:
drivers/usb/gadget/u_serial.c:369: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
drivers/usb/gadget/u_serial.c:369: error: (Each undeclared identifier is reported only once
drivers/usb/gadget/u_serial.c:369: error: for each function it appears in.)
drivers/usb/gadget/u_serial.c: In function ‘gs_rx_push’:
drivers/usb/gadget/u_serial.c:546: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
drivers/usb/gadget/u_serial.c: In function ‘gs_close’:
drivers/usb/gadget/u_serial.c:857: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
drivers/usb/gadget/u_serial.c:857: error: implicit declaration of function ‘signal_pending’
drivers/usb/gadget/u_serial.c:857: error: implicit declaration of function ‘schedule_timeout’
drivers/usb/gadget/u_serial.c: In function ‘gserial_cleanup’:
drivers/usb/gadget/u_serial.c:1190: error: ‘TASK_UNINTERRUPTIBLE’ undeclared (first use in this function)
drivers/usb/gadget/u_serial.c:1190: error: implicit declaration of function ‘schedule’
drivers/usb/gadget/u_serial.c: In function ‘gserial_disconnect’:
drivers/usb/gadget/u_serial.c:1311: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)

Signed-off-by: Stephane Duverger <stephane.duverger@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: fix NULL pointer dererence in HCDs that use HCD_LOCAL_MEM
Andrea Righi [Mon, 28 Jun 2010 14:56:45 +0000 (16:56 +0200)]
USB: EHCI: fix NULL pointer dererence in HCDs that use HCD_LOCAL_MEM

If we use the HCD_LOCAL_MEM flag and dma_declare_coherent_memory() to
enforce the host controller's local memory utilization we also need to
disable native scatter-gather support, otherwise hcd_alloc_coherent() in
map_urb_for_dma() is called with urb->transfer_buffer == NULL, that
triggers a NULL pointer dereference.

We can also consider to add a WARN_ON() and return an error code to
better catch this problem in the future.

At the moment no driver seems to hit this bug, so I should
consider this a low-priority fix.

Signed-off-by: Andrea Righi <arighi@develer.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: xhci: trivial: use ARRAY_SIZE
Kulikov Vasiliy [Mon, 28 Jun 2010 11:55:46 +0000 (15:55 +0400)]
USB: xhci: trivial: use ARRAY_SIZE

Change sizeof(x) / sizeof(*x) to ARRAY_SIZE(x).

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: drivers/usb/Makefile: conditionally descend to 'early'
Nicolas Kaiser [Sun, 27 Jun 2010 15:27:51 +0000 (17:27 +0200)]
USB: drivers/usb/Makefile: conditionally descend to 'early'

Don't descend to the EARLY_PRINTK_DBGP directory
unless it is actually used.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: usblp: fixed switch, brace, whitespace and spacing coding style issues
Nicolas Kaiser [Fri, 25 Jun 2010 18:25:37 +0000 (20:25 +0200)]
USB: usblp: fixed switch, brace, whitespace and spacing coding style issues

Fixed switch, brace, whitespace and spacing coding style issues.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Acked-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: add runtime PM for PCI-based host controllers
Alan Stern [Fri, 25 Jun 2010 18:02:57 +0000 (14:02 -0400)]
USB: add runtime PM for PCI-based host controllers

This patch (as1386) adds runtime-PM support for PCI-based USB host
controllers.  By default autosuspend is disallowed; the user must
enable it by writing "auto" to the controller's power/control sysfs
attribute.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: UHCI: add support for Intel's wakeup flags
Alan Stern [Fri, 25 Jun 2010 18:02:49 +0000 (14:02 -0400)]
USB: UHCI: add support for Intel's wakeup flags

This patch (as1396) adds code to uhci-hcd to support the
vendor-specific wakeup settings found in Intel's ICHx hardware.  A
couple of unnecessary memory barriers are removed.  And the root hub
isn't put back into the "suspended" state if power was lost during a
system sleep -- there's not much point in doing so because the root hub
will be resumed shortly.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: fix race between root-hub wakeup & controller suspend
Alan Stern [Fri, 25 Jun 2010 18:02:35 +0000 (14:02 -0400)]
USB: fix race between root-hub wakeup & controller suspend

This patch (as1395) adds code to hcd_pci_suspend() for handling wakeup
races.  This is another general race pattern, similar to the "open
vs. unregister" race we're all familiar with.  Here, the race is
between suspending a device and receiving a wakeup request from one of
the device's suspended children.

In particular, if a root-hub wakeup is requested at about the same
time as the corresponding USB controller is suspended, and if the
controller is enabled for wakeup, then the controller should either
fail to suspend or else wake right back up again.

During system sleep this won't happen very much, especially since host
controllers generally aren't enabled for wakeup during sleep.  However
it is definitely an issue for runtime PM.  Something like this will be
needed to prevent the controller from autosuspending while waiting for
a root-hub resume to take place.  (That is, in fact, the common case,
for which there is an extra test.)

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: controller resume should check the root hub
Alan Stern [Fri, 25 Jun 2010 18:02:24 +0000 (14:02 -0400)]
USB: controller resume should check the root hub

This patch (as1394) adds code to ehci-hcd, ohci-hcd, and uhci-hcd for
automatically resuming the root hub when the controller is resumed, if
the root hub has a wakeup request pending on some port.

During resume from system sleep this doesn't matter, because the root
hubs will naturally be resumed along with every other device in the
system.  However it _will_ matter for runtime PM: If the controller is
suspended and a remote wakeup request is received then the controller
will autoresume, but we need to ensure that the root hub also
autoresumes.  Otherwise the wakeup request would be ignored, the
controller would go back to sleep, and the cycle would repeat a large
number of times (I saw this happen before the patch was written).

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: add do_wakeup parameter for PCI HCD suspend
Alan Stern [Fri, 25 Jun 2010 18:02:14 +0000 (14:02 -0400)]
USB: add do_wakeup parameter for PCI HCD suspend

This patch (as1385) adds a "do_wakeup" parameter to the pci_suspend
method used by PCI-based host controller drivers.  ehci-hcd in
particular needs to know whether or not to enable wakeup when
suspending a controller.  Although that information is currently
available through device_may_wakeup(), when support is added for
runtime suspend this will no longer be true.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: move PCI HCD resume routine
Alan Stern [Fri, 25 Jun 2010 18:02:03 +0000 (14:02 -0400)]
USB: move PCI HCD resume routine

This patch (as1384) moves the resume_common() routine in hcd-pci.c a
little higher in the source file to avoid forward references in an
upcoming patch.  It also replaces the "hibernated" argument with a
more general "event" argument, which will be useful when the routine
is called during a runtime resume.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: refactor the powermac-specific ASIC clock code
Alan Stern [Fri, 25 Jun 2010 18:01:49 +0000 (14:01 -0400)]
USB: refactor the powermac-specific ASIC clock code

This patch (as1383) takes the powermac-specific code from the PCI HCD
glue layer and encapsulates it in its own subroutine.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: g_fs: code cleanup
Michal Nazarewicz [Fri, 25 Jun 2010 14:29:27 +0000 (16:29 +0200)]
USB: gadget: g_fs: code cleanup

This commit cleans the g_fs gadget hopefully making it more
readable.  This is achieved by usage of the usb_string_ids_tab()
function for batch string IDs registration as well as
generalising configuration so that a single routine is
used to add each configuration and bind interfaces.  As an
effect, the code is shorter and has fewer #ifdefs.

Moreover, in some circumstances previous code #defined
CONFIG_USB_FUNCTIONFS_GENERIC macro to prevent a situation
where gadget with no configurations is built.  This code removes
the #define form source code and achieves the same effect using
select in Kconfig.

This patch also changes wording and names of the Kconfig options.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: convert usb_hcd bitfields into atomic flags
Alan Stern [Tue, 22 Jun 2010 20:39:10 +0000 (16:39 -0400)]
USB: convert usb_hcd bitfields into atomic flags

This patch (as1393) converts several of the single-bit fields in
struct usb_hcd to atomic flags.  This is for safety's sake; not all
CPUs can update bitfield values atomically, and these flags are used
in multiple contexts.

The flag fields that are set only during registration or removal can
remain as they are, since non-atomic accesses at those times will not
cause any problems.

(Strictly speaking, the authorized_default flag should become atomic
as well.  I didn't bother with it because it gets changed only via
sysfs.  It can be done later, if anyone wants.)

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: section mismatch warning fixed
Michal Nazarewicz [Mon, 21 Jun 2010 11:57:04 +0000 (13:57 +0200)]
USB: gadget: section mismatch warning fixed

In may gadgets bind and bind like functions were in a init section
as they were only run during initialisation.  However, being
callback functions they were referenced from structures in “normal”
sections.  Changing the tag from “__init” to “__ref” fixes the
warnings.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: f_mass_storage: added eject callback
Michal Nazarewicz [Mon, 21 Jun 2010 11:57:09 +0000 (13:57 +0200)]
USB: gadget: f_mass_storage: added eject callback

Added pre_eject() and post_eject() callbacks which are
called before and after removable logical unit is ejected.
The first can prevent logical unit from being ejected.

This commit also changes the way callbacks are passed to
the function from gadget.  A fsg_operations structure has
been created which lists all callbacks -- this is passed
to the fsg_config.

This is important because it changes the way thread_exits()
callback is passed.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: composite: added disconnect callback
Michal Nazarewicz [Mon, 21 Jun 2010 11:57:08 +0000 (13:57 +0200)]
USB: gadget: composite: added disconnect callback

Added a disconnect() callback to composite devices which
is called by composite glue when its disconnect callback
is called by gadget.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: g_multi: added documentation and INF files
Michal Nazarewicz [Mon, 21 Jun 2010 11:57:07 +0000 (13:57 +0200)]
USB: gadget: g_multi: added documentation and INF files

A short documentation of the g_multi driver along with INF
files for Windows XP SP3 are provided.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: g_serial: INF file updated
Michal Nazarewicz [Mon, 21 Jun 2010 11:57:06 +0000 (13:57 +0200)]
USB: gadget: g_serial: INF file updated

Updated the INF file for g_serial gadget.  It should work with
most recent Windows systems now.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: g_ether: updated INF file
Michal Nazarewicz [Mon, 21 Jun 2010 11:57:05 +0000 (13:57 +0200)]
USB: gadget: g_ether: updated INF file

Updated the INF file for the g_ether gadget.  It should work with most
recent Windows systems now.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: g_multi: code clean up and refactoring
Michal Nazarewicz [Mon, 21 Jun 2010 11:57:03 +0000 (13:57 +0200)]
USB: gadget: g_multi: code clean up and refactoring

The Multifunction Composite Gadget have been cleaned up
and refactored so hopefully it looks prettier and works
at least as good as before changes.

A Kconfig has also been fixed to make it impossible to build
FunctionFS gadget with no configurations.  With this patch, if
RNDIS is not chosen by the user CDC is force-selected.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: f_mass_storage: dead code removed
Michal Nazarewicz [Fri, 18 Jun 2010 13:59:43 +0000 (15:59 +0200)]
USB: gadget: f_mass_storage: dead code removed

The ep0req_name was never used in f_mass_storage hence it may
be safely removed from the code.  It was a leftover from File
Storage Gadget which used it for debug messages.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: f_fs: use usb_string_ids_n()
Michal Nazarewicz [Wed, 16 Jun 2010 10:08:00 +0000 (12:08 +0200)]
USB: gadget: f_fs: use usb_string_ids_n()

Use usb_string_ids_n() function to simplify string ids
registeration.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: composite: usb_string_ids_*() functions added
Michal Nazarewicz [Wed, 16 Jun 2010 10:07:59 +0000 (12:07 +0200)]
USB: gadget: composite: usb_string_ids_*() functions added

usb_string_ids_tab() and usb_string_ids_n() functions added to
the composite framework.  The first accepts an array of
usb_string object and for each registeres a string id and the
second registeres a given number of ids and returns the first.

This may simplify string ids registration since gadgets and
composite functions won't have to call usb_string_id() several
times and each time check for errer status -- all this will be
done with a single call.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: f_fs: functionfs_add() renamed to functionfs_bind_config()
Michal Nazarewicz [Wed, 16 Jun 2010 10:07:58 +0000 (12:07 +0200)]
USB: gadget: f_fs: functionfs_add() renamed to functionfs_bind_config()

FunctionFS had a bit unique name for function used to add it
to USB configuration.  Renamed as to match naming convention
of other functions.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: f_mass_storage: fsg_add() renamed to fsg_bind_config()
Michal Nazarewicz [Wed, 16 Jun 2010 10:07:57 +0000 (12:07 +0200)]
USB: gadget: f_mass_storage: fsg_add() renamed to fsg_bind_config()

Mass Storage Function had a bit unique name for function
used to add it to USB configuration.  Renamed as to match
naming convention of other functions.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: g_mass_storage: static data instead of dynamic allocation
Michal Nazarewicz [Wed, 16 Jun 2010 10:07:56 +0000 (12:07 +0200)]
USB: gadget: g_mass_storage: static data instead of dynamic allocation

This patch changes msg_do_config() function so that it uses
a static object for a fsg_common structure instead of dynamically
allocated.  This is a micro-optimisation.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: mon: kill BKL usage
Arnd Bergmann [Tue, 1 Jun 2010 21:04:45 +0000 (23:04 +0200)]
USB: mon: kill BKL usage

compat_ioctl does not use the BKL, so I assume that
the native function does not need it either.

The open function is already protected by the
driver's mutex, the BKL is probably not needed
here either.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agousb: gadget: Do not take BKL for gadget->ops->ioctl
Arnd Bergmann [Tue, 1 Jun 2010 21:04:44 +0000 (23:04 +0200)]
usb: gadget: Do not take BKL for gadget->ops->ioctl

There is no gadget driver in the tree that
actually implements the ioctl operation, so
obviously it is not necessary to hold the
BKL around the call.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB-BKL: Remove BKL use in uhci-debug
Andi Kleen [Tue, 1 Jun 2010 21:04:43 +0000 (23:04 +0200)]
USB-BKL: Remove BKL use in uhci-debug

BKL was not really needed, just came from earlier push downs.

The only part that's a bit dodgy is the lseek function. Would
need another lock or atomic access to fpos on 32bit?
Better to have a libfs lseek

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB-BKL: Remove BKL use for usb serial driver probing
Andi Kleen [Tue, 1 Jun 2010 21:04:42 +0000 (23:04 +0200)]
USB-BKL: Remove BKL use for usb serial driver probing

The usb serial driver initialization tried to use the BKL to stop
driver modules from unloading, but that didn't work anyways.

There was already some code to do proper try_module_get,
but it was conditional on having a new probe interface.
I checked all the low level drivers and they all have proper
.owner = THIS_MODULE, so it's ok to always use.

The other problem was the usb_serial_driver_list needing
protection by a lock. This was broken anyways because unregister
did not necessarily have the BKL.

I extended the extending table_lock mutex to protect this case too.

With these changes the BKL can be removed here.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB-BKL: Convert usb_driver ioctl to unlocked_ioctl
Andi Kleen [Tue, 1 Jun 2010 21:04:41 +0000 (23:04 +0200)]
USB-BKL: Convert usb_driver ioctl to unlocked_ioctl

And audit all the users. None needed the BKL.  That was easy
because there was only very few around.

Tested with allmodconfig build on x86-64

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
From: Andi Kleen <ak@linux.intel.com>

14 years agoUSB-BKL: Remove lock_kernel in usbfs update_sb()
Andi Kleen [Tue, 1 Jun 2010 21:04:40 +0000 (23:04 +0200)]
USB-BKL: Remove lock_kernel in usbfs update_sb()

The code this is attempting to lock against does not use the BKL,
so it's not needed.

Most likely this code is still broken/racy (Al Viro also thinks so),
but removing the BKL should not make it worse than before.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agousb: atm: fixed spacing and indentation coding style issues
Nicolas Kaiser [Thu, 17 Jun 2010 09:55:49 +0000 (11:55 +0200)]
usb: atm: fixed spacing and indentation coding style issues

Fixed spacing and indentation coding style issues.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: Add a serial number parameter to g_file_storage module
Yann Cantin [Sat, 5 Jun 2010 21:06:31 +0000 (23:06 +0200)]
USB: Add a serial number parameter to g_file_storage module

This patch add a serial number parameter to the g_file_storage
module. There's validity checks against the string passed to comply
with the specs.

Signed-off-by: Yann Cantin <yann.cantin@laposte.net>
Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agousb: conexant: fixed spacing and brace coding style issues
Nicolas Kaiser [Wed, 16 Jun 2010 16:56:05 +0000 (18:56 +0200)]
usb: conexant: fixed spacing and brace coding style issues

Fixed spacing and brace coding style issues.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: gadget: langwell_udc.c: printk needs a (unsigned long long) cast for a dma_t
Joe Perches [Fri, 11 Jun 2010 02:20:43 +0000 (19:20 -0700)]
USB: gadget: langwell_udc.c: printk needs a (unsigned long long) cast for a dma_t

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoRevert "USB: Adding support for HTC Smartphones to ipaq"
Leann Ogasawara [Thu, 10 Jun 2010 22:49:24 +0000 (15:49 -0700)]
Revert "USB: Adding support for HTC Smartphones to ipaq"

ipaq already had this device id defined:

{ USB_DEVICE(0x0BB4, 0x00CF) }, /* HTC USB Modem */

Revert the commit which adds the duplicate entry.

This reverts commit 04cab1329336d4577d6638360c905e360934b425.

Originally-by: Ben Collins <ben.collins@canonical.com>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: option: Remove duplicate AMOI_VENDOR_ID
Leann Ogasawara [Thu, 10 Jun 2010 21:51:51 +0000 (14:51 -0700)]
USB: option: Remove duplicate AMOI_VENDOR_ID

AMOI_VENDOR_ID is defined twice.  Remove the duplicate entry and move
the AMOI_PRODUCT_9508 definition to be grouped with the other AMOI
product definitions.

Originally-by: Ben Collins <ben.collins@ubuntu.com>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: EHCI 1.1 addendum: Enable Per-port change detect bits
Alek Du [Fri, 4 Jun 2010 07:47:56 +0000 (15:47 +0800)]
USB: EHCI: EHCI 1.1 addendum: Enable Per-port change detect bits

This patch will enable Per-port event feature defined in EHCI 1.1
addendum. This feature addresses an issue where HCD is currently
required to read and parse PORTSC for all enabled root hub ports. With
this patch, the overhead will be reduced.

Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: EHCI 1.1 addendum: Basic LPM feature support
Alek Du [Fri, 4 Jun 2010 07:47:55 +0000 (15:47 +0800)]
USB: EHCI: EHCI 1.1 addendum: Basic LPM feature support

With this patch, the LPM capable EHCI host controller can put device
into L1 sleep state which is a mode that can enter/exit quickly, and
reduce power consumption.

Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: EHCI: EHCI 1.1 addendum: preparation
Alek Du [Fri, 4 Jun 2010 07:47:54 +0000 (15:47 +0800)]
USB: EHCI: EHCI 1.1 addendum: preparation

EHCI 1.1 addendum introduced several energy efficiency extensions for
EHCI USB host controllers:
1. LPM (link power management)
2. Per-port change
3. Shorter periodic frame list
4. Hardware prefetching

This patch is intended to define the HW bits and debug interface for
EHCI 1.1 addendum. The LPM and Per-port change patches will be sent out
after this patch.

Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agousb: throw away custom hex digit methods
Andy Shevchenko [Tue, 15 Jun 2010 14:04:44 +0000 (17:04 +0300)]
usb: throw away custom hex digit methods

Recent kernel has common method to convert hex digit to its value.

Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>