On Wed, May 16, 2018 at 10:42 AM, Marek Szyprowski
<m.szyprowski@xxxxxxxxxxx> wrote:
> Since Linux v4.10 release (commit 1d9174fbc55e "PM / Runtime: Defer
> resuming of the device in pm_runtime_force_resume()"),
> pm_runtime_force_resume() function doesn't runtime resume device if it was
> not runtime active before system suspend. Thus, driver should not do any
> register access after pm_runtime_force_resume() without checking the
> runtime status of the device. To fix this issue, simply move
> s3c64xx_spi_hwinit() call to s3c64xx_spi_runtime_resume() to ensure that
> hardware is always properly initialized. This fixes Synchronous external
> abort issue on system suspend/resume cycle on newer Exynos SoCs.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> This patch is prepared on top of linux-next. I intentionally didn't add
> any CC: stable tags, because such backport requires a change in
> s3c64xx_spi_hwinit() function parameters, what is caused by the commit
> 1c75862d8e5a ("spi: spi-s3c64xx: Remove unused s3c64xx_spi_hwinit()
> function argument") in current -next patchset.
Then how about:
Cc: <stable@xxxxxxxxxxxxxxx> # 4.10.x: 1c75862d8e5a "spi: spi-s3c64xx:
Remove unused s3c64xx_spi_hwinit()
Cc: <stable@xxxxxxxxxxxxxxx> # 4.10.x
Reviewed-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Best regards,
Krzysztof
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