From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Wed, 7 May 2014 07:56:24 +0000 (+0300)
Subject: dmaengine: dw: went back to plain {request,free}_irq() calls
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~137^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97977f7576a89cb9436c000ae703c0d515e748ac;p=pandora-kernel.git

dmaengine: dw: went back to plain {request,free}_irq() calls

The commit dbde5c29 "dw_dmac: use devm_* functions to simplify code" turns
probe function to use devm_* helpers and simultaneously brings a regression. We
need to ensure irq is disabled, followed by ensuring that don't schedule any
more tasklets and then its safe to use tasklet_kill().

The free_irq() will ensure that the irq is disabled and also wait till all
scheduled interrupts are executed by invoking synchronize_irq(). So we need to
only do tasklet_kill() after invoking free_irq().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: stable@vger.kernel.org # v3.11+
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

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