linux-kernel - Re: [PATCH] fsldma: Add a completed cookie updated action in DMA finish interrupt.

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Message-ID: <20080313093102.GB17404@Chamillionaire.breakpoint.cc>
Date:	Thu, 13 Mar 2008 10:31:02 +0100
From:	Sebastian Siewior <lkml@...breakpoint.cc>
To:	Zhang Wei <wei.zhang@...escale.com>
Cc:	dan.j.williams@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fsldma: Add a completed cookie updated action in DMA
	finish interrupt.

* Zhang Wei | 2008-03-13 14:54:20 [+0800]:

>The patch 'fsldma: do not cleanup descriptors in hardirq context'
>(commit 222ccf9ab838a1ca7163969fabd2cddc10403fb5) removed descriptors
>cleanup function to tasklet but the completed cookie do not updated.
>Thus, the DMA controller will get lots of duplicated transfer
>interrupts. Just make a completed cookie update in interrupt handler.
>And keep other cleanup jobs in tasklet function.
>
>Signed-off-by: Zhang Wei <wei.zhang@...escale.com>
Tested-by: Sebastian Siewior <bigeasy@...utronix.de>
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