提交 ab6f148d 编写于 作者: O Oliver Neukum 提交者: David S. Miller

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 65841fd5
That is 3.5
Signed-off-by: NOliver Neukum <oneukum@suse.de>
CC: stable@kernel.org
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 b72c2009
......@@ -1573,7 +1573,7 @@ int usbnet_resume (struct usb_interface *intf)
netif_device_present(dev->net) &&
!timer_pending(&dev->delay) &&
!test_bit(EVENT_RX_HALT, &dev->flags))
rx_alloc_submit(dev, GFP_KERNEL);
rx_alloc_submit(dev, GFP_NOIO);
if (!(dev->txq.qlen >= TX_QLEN(dev)))
netif_tx_wake_all_queues(dev->net);
......
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