tree 431a35108ff4a1272ff789ad380f221d644ef1d1
parent 9c432adaa803c1a6f1065f907caab13248c844df
author Emil Tantilov <emil.s.tantilov@intel.com> 1374544623 +0000
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1375258598 -0700

ixgbe: clear semaphore bits on timeouts

This patch changes the error code path in ixgbe_acquire_swfw_sync() to deal
with cases where acquiring SW semaphore times out.

In cases where the SW/FW semaphore bits were set (i.e. due to a crash) the
driver will hang on load. With this patch the driver will clear
the stuck bits if the semaphore was not acquired in the allotted time.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>