pinctrl: qcom: spmi-gpio: fix gpio-hog related boot issues
authorBrian Masney <masneyb@onstation.org>
Thu, 1 Nov 2018 00:11:47 +0000 (20:11 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 1 Dec 2019 08:14:13 +0000 (09:14 +0100)
commita6f3f79932f9cbd7f5f98efe825091174a1799c1
tree30a61b99f3b842d9ca65557aa7f07b2aca95586f
parent6cfe9bdfd794e8f91d48e422bfbfad921303b034
pinctrl: qcom: spmi-gpio: fix gpio-hog related boot issues

[ Upstream commit 149a96047237574b756d872007c006acd0cc6687 ]

When attempting to setup up a gpio hog, device probing would repeatedly
fail with -EPROBE_DEFERED errors. It was 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.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/pinctrl/qcom/pinctrl-spmi-gpio.c