Re: [PATCH 2/3] mmc: core: API for temporarily disabling auto-retuning due to errors

[Arend Van Spriel]

On 5/28/2019 12:04 PM, Adrian Hunter wrote:
> On 26/05/19 9:42 PM, Arend Van Spriel wrote:
> > On 5/18/2019 12:54 AM, Douglas Anderson wrote:
> > > Normally when the MMC core sees an "-EILSEQ" error returned by a host
> > > controller then it will trigger a retuning of the card. This is
> > > generally a good idea.
> >
> > Probably a question for Adrian, but how is this retuning scheduled. I recall
> > seeing something in mmc_request_done. How about deferring the retuning upon
> > a release host or is that too sdio specific.
>
> Below is what I have been carrying the last 4 years.  But according to Douglas'
> patch, the release would need to be further down.  See 2nd diff below.
> Would that work?

That makes sense. The loop is needed because the device can be a bit 
bone headed. So indeed after the loop the device should be awake and 
able to handle CMD19.

Regards,
Arend