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Re: [PATCH v2] dmaengine: pxa_dma: fix cyclic transfers

Started byVinod Koul <vinod.koul@intel.com>
First post2016-03-03 16:40 +0100
Last post2016-03-03 18:20 +0100
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  Re: [PATCH v2] dmaengine: pxa_dma: fix cyclic transfers Vinod Koul <vinod.koul@intel.com> - 2016-03-03 16:40 +0100
    Re: [PATCH v2] dmaengine: pxa_dma: fix cyclic transfers Robert Jarzmik <robert.jarzmik@free.fr> - 2016-03-03 18:20 +0100

#1349296 — Re: [PATCH v2] dmaengine: pxa_dma: fix cyclic transfers

FromVinod Koul <vinod.koul@intel.com>
Date2016-03-03 16:40 +0100
SubjectRe: [PATCH v2] dmaengine: pxa_dma: fix cyclic transfers
Message-ID<r8Dw7-Di-35@gated-at.bofh.it>
On Tue, Feb 16, 2016 at 10:54:02PM +0100, Robert Jarzmik wrote:
> While testing audio with pxa2xx-ac97, underrun were happening while the
> user application was correctly feeding the music. Debug proved that the
> cyclic transfer is not cyclic, ie. the last descriptor did not loop on
> the first.
> 
> Another issue is that the descriptor length was always set to 8192,
> because of an trivial operator issue.
> 
> This was tested on a pxa27x platform.

Applied, thanks

-- 
~Vinod

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#1349414

FromRobert Jarzmik <robert.jarzmik@free.fr>
Date2016-03-03 18:20 +0100
Message-ID<r8F4S-1WU-1@gated-at.bofh.it>
In reply to#1349296
Vinod Koul <vinod.koul@intel.com> writes:

> On Tue, Feb 16, 2016 at 10:54:02PM +0100, Robert Jarzmik wrote:
>> While testing audio with pxa2xx-ac97, underrun were happening while the
>> user application was correctly feeding the music. Debug proved that the
>> cyclic transfer is not cyclic, ie. the last descriptor did not loop on
>> the first.
>> 
>> Another issue is that the descriptor length was always set to 8192,
>> because of an trivial operator issue.
>> 
>> This was tested on a pxa27x platform.
>
> Applied, thanks
Thanks Vinod !

Cheers.

-- 
Robert

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