On Sun, Nov 11, 2018 at 2:34 AM Brian Masney <masneyb@xxxxxxxxxxxxx> wrote:
> When attempting to setup up a gpio hog, device probing will repeatedly
> fail with -EPROBE_DEFERED errors. It is caused by a circular dependency
> between the gpio and pinctrl frameworks. If the gpio-ranges property is
> present in device tree, then the gpio framework will handle the gpio pin
> registration and eliminate the circular dependency.
>
> See Christian Lamparter's commit a86caa9ba5d7 ("pinctrl: msm: fix
> gpio-hog related boot issues") for a detailed commit message that
> explains the issue in much more detail. The code comment in this commit
> came from Christian's commit.
>
> I did not test this change against any hardware supported by this
> particular driver, however I was able to validate this same fix works
> for pinctrl-spmi-gpio.c using a LG Nexus 5 (hammerhead) phone.
>
> Signed-off-by: Brian Masney <masneyb@xxxxxxxxxxxxx>
Patch applied.
Yours,
Linus Walleij
