From: Bhanu Gollapudi <bprakash@broadcom.com>
Date: Tue, 22 Mar 2011 01:51:13 +0000 (-0700)
Subject: [SCSI] bnx2fc: IO completion not processed due to missed wakeup
X-Git-Tag: v2.6.39-rc1~52^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fee787129d4d6a5e967a69ea3dea3e38ba556b3d;p=pandora-kernel.git

[SCSI] bnx2fc: IO completion not processed due to missed wakeup

Driver does not detect a new CQE (completion queue entry) if a thread receives
the wakup when it is in TASK_RUNNING state. Fix is to set the state to
TASK_INTERRUPTIBLE while holding the fp_work_lock.

Also, Use __set_current_task() since it is now set inside a spinlock with
synchronization.

Two other related optimizations:

1.  After we exit the while (!kthread_should_stop()) loop, use
__set_current_state() since synchronization is no longer needed.

2.  Remove set_current_state(TASK_RUNNING) after schedule() since it
should always be TASK_RUNNING after schedule().

Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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