[PATCH] usbatm: Detect usb device shutdown and ignore failed urbs.

[Simon Arlott <simon@fire.lp0.eu>]

Detect usb device shutdown and ignore failed urbs.
This happens when the driver is unloaded or the device is unplugged.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Cc: Duncan Sands <duncan.sands@math.u-psud.fr>
---
I'm not sure what other urb statuses should be ignored,
and the warning message doesn't need to be shown when
the module is unloaded or the device is removed.

drivers/usb/atm/usbatm.c |    3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index d0f1976..6b31175 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -274,6 +274,9 @@ static void usbatm_complete(struct urb *urb)
			(!(channel->usbatm->flags & UDSL_IGNORE_EILSEQ) ||
			 urb->status != -EILSEQ ))
	{
+		if (urb->status == -ESHUTDOWN)
+			return;
+
		if (printk_ratelimit())
			atm_warn(channel->usbatm, "%s: urb 0x%p failed (%d)!\n",
				__func__, urb, urb->status);
--
1.5.0.1

--
Simon Arlott
-
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