linux-kernel - Re: [PATCH v2 2/2] dmaengine: dw: fix cyclic transfer callbacks

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Message-ID: <20160111141048.GB1084@ubuntu>
Date:	Mon, 11 Jan 2016 19:40:48 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Mans Rullgard <mans@...sr.com>
Cc:	Viresh Kumar <vireshk@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Vinod Koul <vinod.koul@...el.com>, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] dmaengine: dw: fix cyclic transfer callbacks

On 11-01-16, 13:04, Mans Rullgard wrote:
> Cyclic transfer callbacks rely on block completion interrupts which were
> disabled in commit ff7b05f29fd4 ("dmaengine/dw_dmac: Don't handle block
> interrupts").  This re-enables block interrupts so the cyclic callbacks
> can work.  Other transfer types are not affected as they set the INT_EN
> bit only on the last block.
> 
> Fixes: ff7b05f29fd4 ("dmaengine/dw_dmac: Don't handle block interrupts")
> Signed-off-by: Mans Rullgard <mans@...sr.com>
> ---
> Changes:
> - new patch
> ---
>  drivers/dma/dw/core.c | 21 +++++++++++++++------
>  1 file changed, 15 insertions(+), 6 deletions(-)

Reviewed-by: Viresh Kumar <viresh.kumar@...aro.org>

BTW, Shouldn't you mark these for stable trees as well ? :)

-- 
viresh