linux/drivers/net/ethernet/amazon
Netanel Belgazal a77c1aafcc net: ena: fix rare uncompleted admin command false alarm
The current flow to detect admin completion is:
while (command_not_completed) {
	if (timeout)
		error

	check_for_completion()
		sleep()
   }
So in case the sleep took more than the timeout
(in case the thread/workqueue was not scheduled due to higher priority
task or prolonged VMexit), the driver can detect a stall even if
the completion is present.

The fix changes the order of this function to first check for
completion and only after that check if the timeout expired.

Fixes: 1738cd3ed3 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 16:36:45 -04:00
..
ena net: ena: fix rare uncompleted admin command false alarm 2017-06-11 16:36:45 -04:00
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