On Thu, Jun 25, 2015 at 9:06 AM, Fabio Estevam <festevam@xxxxxxxxx> wrote:
> Hi David,
>
> On Thu, Jun 25, 2015 at 8:56 AM, David Jander <david@xxxxxxxxxxx> wrote:
>
>> I am afraid this was a little too soon. There are still problems with DMA,
>> even using the ROM firmware, it is just that the close() system call is not
>> hanging anymore.
>
> Just to confirm: do you Philipp's patch applied?
> 392bceedb107a3dc1d4287e63 ("serial: imx: Fix DMA handling for IDLE
> condition aborts")
>
>> I am considering to propose reversal of '068500e serial: imx: initialized DMA
>> w/o HW flow enabled', because I suspect that SDMA support in this driver is
>> just broken. I base this conclusion on the following test results:
>
> Please prepare and submit a patch with the revert.
BTW, Sebastian has initally proposed reverting such commit:
http://lkml.iu.edu/hypermail/linux/kernel/1505.1/00085.html
,but then he confirmed that Phillip's patch fixed his issue.
Regards,
Fabio Estevam
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