From: Emil Tantilov <emil.s.tantilov@intel.com>
Date: Tue, 23 Jul 2013 01:57:03 +0000 (+0000)
Subject: ixgbe: clear semaphore bits on timeouts
X-Git-Tag: v3.12-rc1~132^2~416^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=674c18b2ed65f9db04e5c2e9c9e4af8fa2af0f1b;p=pandora-kernel.git

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>
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