[PATCH v4 7/8] DMA: Freescale: use spin_lock_bh instead of spin_lock_irqsave

Hongbo Zhang hongbo.zhang at freescale.com
Sun May 4 18:40:18 EST 2014

On 05/03/2014 12:51 AM, Vinod Koul wrote:
> On Fri, Apr 18, 2014 at 04:17:50PM +0800, hongbo.zhang at freescale.com wrote:
>> From: Hongbo Zhang <hongbo.zhang at freescale.com>
>> 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.
> This doesnt apply, perhpas due to depends on 6/8
So let's wait for the review result of 6/8.

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