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| /openbmc/linux/drivers/net/usb/ |
| H A D | usbnet.c | diff ab6f148de28261682d300662e87b9477f7efc95b Sun Aug 26 15:41:38 CDT 2012 Oliver Neukum <oliver@neukum.org> usbnet: fix deadlock in resume
A usbnet device can share a multifunction device
with a storage device. If the storage device is autoresumed
the usbnet devices also needs to be autoresumed. Allocating
memory with GFP_KERNEL can deadlock in this case.
This should go back into all kernels that have
commit 65841fd5132c3941cdf5df09e70df3ed28323212
That is 3.5
Signed-off-by: Oliver Neukum <oneukum@suse.de>
CC: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
diff 65841fd5132c3941cdf5df09e70df3ed28323212 Tue Jun 19 16:15:53 CDT 2012 Ming Lei <ming.lei@canonical.com> usbnet: handle remote wakeup asap
If usbnet is resumed by remote wakeup, generally there are
some packets comming to be handled, so allocate and submit
rx URBs in usbnet_resume to avoid delays introduced by tasklet.
Otherwise, usbnet may have been runtime suspended before the
usbnet_bh is executed to schedule Rx URBs.
Without the patch, usbnet can't recieve any packets from peer
in runtime suspend state if runtime PM is enabled and
autosuspend_delay is set as zero.
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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