Tony Lindgren <tony@xxxxxxxxxxx> wrote:
> We can have pm_runtime_get_sync() return 1, and we can have
> pm_runtime_put_sync() return -EBUSY. See rpm_suspend() and
> rpm_resume() for more information.
>
> Fix the issue by returning 0 from wl12xx_sdio_power_on() on success.
> And use pm_runtime_put() instead of pm_runtime_put_sync() for
> wl12xx_sdio_power_off(), then the MMC subsystem will idle the bus
> when suitable.
>
> Otherwise wlcore can sometimes get confused and may report bogus
> errors and WLAN connection can fail.
>
> Note that while wlcore checks the return value for wl1271_power_on(),
> the return value is ignored for wl1271_power_off(). Let's fix them
> both though to avoid further confusion in the future.
>
> Fixes: 60f36637bbbd ("wlcore: sdio: allow pm to handle sdio power")
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Patch applied to wireless-drivers-next.git, thanks.
728a9dc61f13 wlcore: sdio: Fix flakey SDIO runtime PM handling
--
https://patchwork.kernel.org/patch/10407569/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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