From 2baff5700b0832632f05c2ae93362fe3320cc735 Mon Sep 17 00:00:00 2001
From: Hongbo Zhang <hongbo.zhang@freescale.com>
Date: Wed, 21 May 2014 16:03:01 +0800
Subject: [PATCH] dmaengine: Freescale: use spin_lock_bh instead of
 spin_lock_irqsave

The usage of spin_lock_irqsave() is a stronger locking mechanism than is
required throughout the driver. The minimum locking required should be used
instead. Interrupts will be turned off and context will be saved, it is
unnecessary to use irqsave.

This patch changes all instances of spin_lock_irqsave() to spin_lock_bh(). All
manipulation of protected fields is done using tasklet context or weaker, which
makes spin_lock_bh() the correct choice.

Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
Signed-off-by: Qiang Liu <qiang.liu@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
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