Re: [PATCH v4 00/23] Fix libata suspend/resume handling and code cleanup

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On Thu, Sep 21, 2023 at 11:21 AM Geert Uytterhoeven
<geert@xxxxxxxxxxxxxx> wrote:
> On Wed, Sep 20, 2023 at 3:54 PM Damien Le Moal <dlemoal@xxxxxxxxxx> wrote:
> > The first 9 patches of this series fix several issues with suspend/resume
> > power management operations in scsi and libata. The most significant
> > changes introduced are in patch 4 and 5, where the manage_start_stop
> > flag of scsi devices is split into the manage_system_start_stop and
> > manage_runtime_start_stop flags to allow keeping scsi runtime power
> > operations for spining up/down ATA devices but have libata do its own
> > system suspend/resume device power state management using EH.
> >
> > The remaining patches are code cleanup that do not introduce any
> > significant functional change.
> >
> > This series was tested on qemu and on various PCs and servers. I am
> > CC-ing people who recently reported issues with suspend/resume.
> > Additional testing would be much appreciated.
> >
> > Changes from v3:
> >  * Corrected pathc 1 (typo in commit message and WARN_ON() removal)
> >  * Changed path 3 as suggested by Niklas (moved definition of
> >    ->slave_alloc)
> >  * Rebased on rc2
> >  * Added review tags
> Thanks for the update!
> I gave this a try on Renesas Salvator-XS with R-Car H3 ES2.0 and
> a SATA hard drive:
>   - The drive is spun up during system resume,
>   - Accessing the drive after the system was resumed is instantaneous.

Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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