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Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the callback

From Sinan Kaya <okaya@codeaurora.org>
Newsgroups linux.kernel
Subject Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the callback
Date 2016-08-19 05:40 +0200
Message-ID <s7IP0-hA-9@gated-at.bofh.it> (permalink)
References (6 earlier) <s3OzD-7xb-5@gated-at.bofh.it> <s3U2m-2BY-11@gated-at.bofh.it> <s4GTq-n4-109@gated-at.bofh.it> <s4IBQ-1DK-27@gated-at.bofh.it> <s7I2B-8cc-11@gated-at.bofh.it>
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On 8/18/2016 10:48 PM, Vinod Koul wrote:
>> Keep a size limited list with error cookies and flush them in terminate all?
> I think so, terminate_all anyway cleans up the channel. Btw what is the
> behaviour on error? Do you terminate or somthing else?
> 

On error, I flush all outstanding transactions with an error code and I reset
the channel. After the reset, the DMA channel is functional again. The client
doesn't need to shutdown anything.


-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.

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Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Vinod Koul <vinod.koul@intel.com> - 2016-08-19 04:50 +0200
  Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Sinan Kaya <okaya@codeaurora.org> - 2016-08-19 05:40 +0200
    Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Vinod Koul <vinod.koul@intel.com> - 2016-08-19 05:40 +0200
      Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Sinan Kaya <okaya@codeaurora.org> - 2016-08-19 05:50 +0200
        Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Vinod Koul <vinod.koul@intel.com> - 2016-08-19 07:50 +0200
          Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback okaya@codeaurora.org - 2016-08-19 13:30 +0200
            Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Vinod Koul <vinod.koul@intel.com> - 2016-08-19 19:00 +0200
              Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Sinan Kaya <okaya@codeaurora.org> - 2016-08-19 19:40 +0200
                Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Vinod Koul <vinod.koul@intel.com> - 2016-08-22 08:20 +0200
                Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Sinan Kaya <okaya@codeaurora.org> - 2016-08-22 15:30 +0200
                Re: [PATCH] dmaengine: qcom_hidma: release the descriptor before the  callback Vinod Koul <vinod.koul@intel.com> - 2016-08-22 19:00 +0200

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