Re: [PATCH v2 0/3] scsi: ufs: Add error handling of Auto-Hibernate

[Stanley Chu <stanley.chu@mediatek.com>]

Hi Avri, Alim, Pedro,

Gentle ping for this patch.

On Wed, 2019-05-15 at 17:36 +0800, Stanley Chu wrote:
> Currently auto-hibernate is activated if host supports
> auto-hibern8 capability. However error-handling is not implemented,
> which makes the feature somewhat risky.
> 
> If either "Hibernate Enter" or "Hibernate Exit" fail during
> auto-hibernate flow, the corresponding interrupt
> "UIC_HIBERNATE_ENTER" or "UIC_HIBERNATE_EXIT" shall be raised
> according to UFS specification.
> 
> This patch adds auto-hibernate error-handling:
> 
> - Monitor "Hibernate Enter" and "Hibernate Exit" interrupts after
>   auto-hibernate feature is activated.
> 
> - If fail happens, trigger error-handling just like "manual-hibernate"
>   fail and apply the same recovery flow: schedule UFS error handler in
>   ufshcd_check_errors(), and then do host reset and restore
>   in UFS error handler.
> 
> v2:
>  - Fix sentences in commit message (Marc Gonzalez)
>  - Make "Auto-Hibernate" error detection more precise (Bean Huo)
> 
> Stanley Chu (3):
>   scsi: ufs: Do not overwrite Auto-Hibernate timer
>   scsi: ufs: Add error-handling of Auto-Hibernate
>   scsi: ufs: Use re-factored Auto-Hibernate function
> 
>  drivers/scsi/ufs/ufshcd.c | 33 ++++++++++++++++++++++++++++++++-
>  drivers/scsi/ufs/ufshcd.h |  5 +++++
>  drivers/scsi/ufs/ufshci.h |  3 +++
>  3 files changed, 40 insertions(+), 1 deletion(-)
> 
Thanks,
Stanley


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel