linux-kernel - Re: [resend][PATCH 16/16] dma: dw_dmac: clear suspend bit during termination

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Message-ID: <CAHp75VfPzZf2qBw5Mz_quMEZC_zKoLE6Cpswi9srMQ4egosEiw@mail.gmail.com>
Date:	Wed, 9 Jan 2013 17:07:47 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Vinod Koul <vinod.koul@...el.com>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.jf.intel.com>,
	linux-kernel@...r.kernel.org,
	Viresh Kumar <viresh.kumar@...aro.org>,
	spear-devel <spear-devel@...t.st.com>
Subject: Re: [resend][PATCH 16/16] dma: dw_dmac: clear suspend bit during termination

On Wed, Jan 9, 2013 at 4:18 PM, Vinod Koul <vinod.koul@...el.com> wrote:
> On Wed, Jan 09, 2013 at 10:17:15AM +0200, Andy Shevchenko wrote:
>> From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
>>
>> The DMA transfer could not be established if previously it was paused and
>> terminated. In that case the channel's suspend bit remains set that prevents to
>> transfer anything until channel is resumed.
>>
>> The patch adds a code that clears the DWC_CFGL_CH_SUSP bit during termination.
> No this patch calls resume to do so... Can you update the change log

Updated. Will occur in patch v2.

>>
>> Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
>> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
>> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
>> ---
>>  drivers/dma/dw_dmac.c |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
>> index 6a8f8c7..c6ebea1 100644
>> --- a/drivers/dma/dw_dmac.c
>> +++ b/drivers/dma/dw_dmac.c
>> @@ -1059,7 +1059,7 @@ static int dwc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
>>
>>               dwc_chan_disable(dw, dwc);
>>
>> -             dwc->paused = false;
>> +             dwc_chan_resume(dwc);
>>
>>               /* active_list entries will end up before queued entries */
>>               list_splice_init(&dwc->queue, &list);
>> --
>> 1.7.10.4
>>
> --
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-- 
With Best Regards,
Andy Shevchenko
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