linux-kernel - Re: [PATCH] dmaengine: fix balance of privatecnt

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Message-ID: <20150930080028.GF21690@vkoul-mobl.iind.intel.com>
Date:	Wed, 30 Sep 2015 13:30:28 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	dan.j.williams@...el.com, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dmaengine: fix balance of privatecnt

On Thu, Sep 24, 2015 at 12:03:35PM +0300, Peter Ujfalusi wrote:
> dma_release_channel() decrements privatecnt counter and almost all dma_get*
> function increments it with the exception of dma_get_slave_channel().
> In most cases this does not cause issue since normally the channel is not
> requested and released, but if a driver requests DMA channel via
> dma_get_slave_channel() and releases the channel the privatecnt will be
> unbalanced and this will prevent for example getting channel for memcpy.

Applied, thanks

-- 
~Vinod
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