linux-stable.git/drivers/usb/chipidea, branch v3.7.8

usb: chipidea: Allow disabling streaming not only in udc mode

2013-01-21T19:44:34+00:00

commit 929473ea05db455ad88cdc081f2adc556b8dc48f upstream.

When running a scp transfer using a USB/Ethernet adapter the following crash
happens:

$ scp test.tar.gz fabio@192.168.1.100:/home/fabio
fabio@192.168.1.100's password:
test.tar.gz                                      0%    0     0.0KB/s   --:-- ETA
------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:255 dev_watchdog+0x2cc/0x2f0()
NETDEV WATCHDOG: eth0 (asix): transmit queue 0 timed out
Modules linked in:
Backtrace:
[<80011c94>] (dump_backtrace+0x0/0x10c) from [<804d3a5c>] (dump_stack+0x18/0x1c)
 r6:000000ff r5:80412388 r4:80685dc0 r3:80696cc0
[<804d3a44>] (dump_stack+0x0/0x1c) from [<80021868>]
(warn_slowpath_common+0x54/0x6c)
[<80021814>] (warn_slowpath_common+0x0/0x6c) from [<80021924>]
(warn_slowpath_fmt+0x38/0x40)
...

Setting SDIS (Stream Disable Mode- bit 4 of USBMODE register) fixes the problem.

However, in current code CI13XXX_DISABLE_STREAMING flag is only set in udc mode,
so allow disabling streaming also in host mode.

Tested on a mx6qsabrelite board.

Suggested-by: Peter Chen 
Signed-off-by: Fabio Estevam 
Reviewed-by: Peter Chen 
Signed-off-by: Greg Kroah-Hartman

USB: chipidea: fix use after free bug

2013-01-11T17:18:33+00:00

commit 98c35534420d3147553bd3071a5fc63cd56de5b1 upstream.

The pointer to a platform_device struct must not be dereferenced after
the device has been unregistered.

This bug produces a crash when unloading the ci13xxx kernel module
compiled with CONFIG_PAGE_POISONING enabled.

Signed-off-by: Lothar Waßmann 
Acked-by: Alexander Shishkin 
Signed-off-by: Greg Kroah-Hartman

USB: chipidea: re-order irq handling to avoid unhandled irqs

2012-09-12T18:20:38+00:00

- let role driver handle irq before ID change check; this gives the
  role driver a chance to handle disconnect;
- disable irq during switch role; no role driver to handle irq in
  the period.

Tested-by: Michael Grzeschik 
Tested-by: Marc Kleine-Budde 
Signed-off-by: Richard Zhao 
Signed-off-by: Alexander Shishkin 
Signed-off-by: Greg Kroah-Hartman

USB: chipidea: add -DDEBUG if debugging is enabled

2012-09-12T18:20:38+00:00

This patch turns on debugging output if CONFIG_USB_CHIPIDEA_DEBUG is
enabled.

Signed-off-by: Richard Zhao 
Tested-by: Michael Grzeschik 
Tested-by: Marc Kleine-Budde 
Signed-off-by: Alexander Shishkin 
Signed-off-by: Greg Kroah-Hartman

USB: chipidea: add vbus detect for udc

2012-09-12T18:20:38+00:00

Using vbus valid interrupt to detect vbus.

Tested-by: Michael Grzeschik 
Tested-by: Marc Kleine-Budde 
Signed-off-by: Richard Zhao 
Signed-off-by: Alexander Shishkin 
Signed-off-by: Greg Kroah-Hartman

USB: chipidea: acknowledge ID change interrupt in irq handler

2012-09-12T18:20:38+00:00

In order to avoid re-queueing of the role changing work, we need to clear
the ID change interrupt bit right in the irq handler.

Tested-by: Michael Grzeschik 
Tested-by: Marc Kleine-Budde 
Signed-off-by: Richard Zhao 
Signed-off-by: Alexander Shishkin 
Signed-off-by: Greg Kroah-Hartman

USB: chipidea: delay 2ms before read ID status at probe time

2012-09-12T18:20:38+00:00

The ID pin needs 1ms debounce time, even at probe time. We delay 2ms
to be on the safe side.

Tested-by: Michael Grzeschik 
Tested-by: Marc Kleine-Budde 
Signed-off-by: Richard Zhao 
Signed-off-by: Alexander Shishkin 
Signed-off-by: Greg Kroah-Hartman

USB: chipidea: imx: add pinctrl support

2012-09-12T18:20:38+00:00

Some controllers may not need to setup pinctrl, so we don't fail the
probe if pinctrl get/select failed.

Tested-by: Michael Grzeschik 
Tested-by: Marc Kleine-Budde 
Signed-off-by: Richard Zhao 
Signed-off-by: Alexander Shishkin 
Signed-off-by: Greg Kroah-Hartman

USB: chipidea: add imx usbmisc support

2012-09-12T18:20:38+00:00

i.MX usb controllers share non-core registers, which may include
SoC specific controls. We turn it into a usbmisc device and usbmisc
driver set operations needed by ci13xxx_imx driver.

For example, Sabrelite board has bad over-current design, we can
usbmisc to disable over-current detection.

Acked-by: Sascha Hauer 
Signed-off-by: Richard Zhao 
Signed-off-by: Alexander Shishkin 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'chipidea-stable' into usb-next

2012-09-12T18:05:11+00:00

These chipidea stable patches are needed for other chipidea patches to be
applied properly.

Signed-off-by: Greg Kroah-Hartman