[[PATCH]] Revert "leds: handle suspend/resume in heartbeat trigger"
Linus Walleij
linus.walleij at linaro.org
Tue Jun 13 02:35:22 PDT 2017
On Tue, Jun 13, 2017 at 4:39 AM, Zhang Bo <bo.zhang at nxp.com> wrote:
> This reverts commit 5ab92a7cb82c66bf30685583a38a18538e3807db.
>
> System cannot enter suspend mode because of heartbeat led trigger.
> In autosleep_wq, try_to_suspend function will try to enter suspend
> mode in specific period. it will get wakeup_count then call pm_notifier
> chain callback function and freeze processes.
> Heartbeat_pm_notifier is called and it call led_trigger_unregister to
> change the trigger of led device to none. It will send uevent message
> and the wakeup source count changed. As wakeup_count changed, suspend
> will abort.
>
> Signed-off-by: Zhang Bo <bo.zhang at nxp.com>
OK I was stupid, lesson learned.
Reviewed-by: Linus Walleij <linus.walleij at linaro.org>
Yours,
Linus Walleij
More information about the linux-arm-kernel
mailing list