From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3] dmaengine: mxs-dma: add dma support for i.MX23/28
Date: Wed, 23 Feb 2011 10:05:47 +0000 [thread overview]
Message-ID: <20110223100547.GG29559@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1298440516.23371.258.camel@vkoul-udesk3>
On Wed, Feb 23, 2011 at 11:25:16AM +0530, Koul, Vinod wrote:
> Well in that case you are calling the callback from irq handler which is
> not so good. The tasklet is other extreme (slow).
tasklets are run on the exit path of interrupts.
> Given that this is
> also intended for audio I am not sure if calling period elapsed from
> tasklet callback will not cause any audio over/underruns, last I tried
> it used to break quite often in stressed situations.
Nevertheless, the DMA engine API specifies that callbacks shall be called
from tasklet context.
next prev parent reply other threads:[~2011-02-23 10:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-21 10:21 [PATCH v3] dmaengine: mxs-dma: add dma support for i.MX23/28 Shawn Guo
2011-02-21 17:19 ` Wolfram Sang
2011-02-23 4:01 ` Koul, Vinod
2011-02-23 5:57 ` Shawn Guo
2011-02-23 5:55 ` Koul, Vinod
2011-02-23 10:05 ` Russell King - ARM Linux [this message]
2011-02-23 10:21 ` Russell King - ARM Linux
2011-02-23 11:06 ` Koul, Vinod
2011-02-23 12:12 ` Russell King - ARM Linux
2011-02-23 7:58 ` Lothar Waßmann
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