From mboxrd@z Thu Jan  1 00:00:00 1970
From: LW@KARO-electronics.de (=?utf-8?Q?Lothar_Wa=C3=9Fmann?=)
Date: Fri, 27 Apr 2012 11:18:31 +0200
Subject: [PATCH 01/11] dma: imx-sdma: make channel0 operations atomic
In-Reply-To: <1335510185-7906-2-git-send-email-richard.zhao@freescale.com>
References: <1335510185-7906-1-git-send-email-richard.zhao@freescale.com>
 <1335510185-7906-2-git-send-email-richard.zhao@freescale.com>
Message-ID: <20378.25703.527491.719116@ipc1.ka-ro>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Hi,

Richard Zhao writes:
> device_prep_dma_cyclic may be call in audio trigger function which is
> atomic context, so we make it atomic too.
> 
>  - change channel0 lock to spinlock.
>  - Use polling to wait for channel0 finish running.
> 
> Signed-off-by: Lothar Wa?mann <LW@KARO-electronics.de>
>
Actually I didn't sign off the patch that I posted, because I wanted
to wait for more comments first.


Lothar Wa?mann
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