RE: [PATCH v1 1/1] scsi: ufshcd: Allow zero value setting to Auto-Hibernate Timer

From: Avri Altman
Date: Wed Sep 02 2020 - 01:10:35 EST



>
> On 2020-08-29 00:32, Avri Altman wrote:
> >>
> >> The zero value Auto-Hibernate Timer is a valid setting, and it
> >> indicates the Auto-Hibernate feature being disabled. Correctly
> > Right. So " ufshcd_auto_hibern8_enable" is no longer an appropriate
> > name.
> > Maybe ufshcd_auto_hibern8_set instead?
> Thanks for your comment. I am ok with the name change suggestion.
> >
> > Also, did you verified that no other platform relies on its non-zero
> > value?
> I only tested the change on Qualcomm's platform. I do not have other
> platforms to do the test.
> The UFS host controller spec JESD220E, Section 5.2.5 says
> "Software writes “0” to disable Auto-Hibernate Idle Timer". So the spec
> supports this zero value.
> Some options:
> - We could add a hba->caps so that we only apply the change for
> Qualcomm's platforms.
> This is not preferred because it is following the spec implementations.
> - Or other platforms that do not support the zero value needs a caps.
Yeah, I don't think another caps is required,
Maybe just an ack from Stanley.

Thanks,
Avri