Re: [PATCH 09/25] media: hantro: do a PM resume earlier

[Mauro Carvalho Chehab]

Em Wed, 05 May 2021 10:22:03 -0300
Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> escreveu:

> Hi Mauro,
> 
> Thanks for working on this.
> 
> On Wed, 2021-05-05 at 11:41 +0200, Mauro Carvalho Chehab wrote:
> > The device_run() first enables the clock and then
> > tries to resume PM runtime, checking for errors.
> > 
> > Well, if for some reason the pm_runtime can not resume,
> > it would be better to detect it beforehand.
> > 
> > So, change the order inside device_run().
> > 
> > Reviewed-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
> > Fixes: 775fec69008d ("media: add Rockchip VPU JPEG encoder driver")
> > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>  
> 
> It seems this is wrong now, as this series doesn't have
> 
> https://lore.kernel.org/linux-media/803c39fafdd62efc6f9e4d99a372af2c6955143b.1619621413.git.mchehab+huawei@xxxxxxxxxx/
> 
> I don't fully understand why all the back and forth
> happening on this series, but the former Hantro patches
> looked good (despite perhaps unclear commit messages).

There was a request to break the original /79 series into smaller ones,
to make easier for reviewers. So, I opted to split it into (probably)
3 series:

1. Fixes (this series);
2. "use pm_runtime_resume_and_get" for the I2C drivers;
3. "use pm_runtime_resume_and_get" for remaining ones.

Before flooding everybody's email's with series (2) and (3), better
to focus at the fixes first. I'll probably send the other two series
by tomorrow.

> Any issues just squashing these two commits from "[PATCH v4 00/79] Address some issues with PM runtime at media subsystem":
> 
>   media: hantro: use pm_runtime_resume_and_get()
>   media: hantro: do a PM resume earlier

The problem is that pm_runtime_resume_and_get() was added only
recently (Kernel v5.10). 

So, I opted to place the fix patches before the changes, as this
way, most (all?) patches can be easily be backported to legacy Kernels
as needed.

Thanks,
Mauro