[PATCH] gpio: use raw spinlock for gpio chip shadowed data

[Schspa Shi]

Andy Shevchenko <andy.shevchenko at gmail.com> writes:

>
>  Changelog:
>  v1 -> v2:
>          - Reduce the useless stacktrace.
>          - Split to series of patches
>
> Changelog usually goes after cutter ‘--- ‘ line.  Besides that you haven’t compiled your tree just after this patch.
>

Yes, thanks for reminding me, I will fix it by upload another version
of patch if there is no other problems.

>  Link: https://lore.kernel.org/all/20220415165505.30383-1-schspa@gmail.com/
>
>  Signed-off-by: Schspa Shi <schspa at gmail.com>
>  ---
>   drivers/gpio/gpio-mmio.c    | 22 +++++++++++-----------
>   include/linux/gpio/driver.h |  2 +-
>
> You can’t do it for one driver only. As I told it will require too much of additional churn to make this to be series.
>

It seems I have misunderstood your "too much of additional churn". Can
you explain it?
The gpio-mmio.c and driver.h here are the basics of other gpio
drivers. In my opinion, these two files
belong to the basic code of gpio, and functions such as bgpio_init are
declared in
include/linux/gpio/driver.h and implemented in
drivers/gpio/gpio-mmio.c. So there is no churn.


--
Schspa Shi
BRs