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| author | Brian Masney <masneyb@onstation.org> | 2018-11-10 20:34:11 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-13 08:51:26 +0100 |
| commit | 095fe9307550b70ea35432f540be1a71cd9aba23 (patch) | |
| tree | aca2b5ecf648debd1b8b323c0b0110712d234a41 /include | |
| parent | 702155b1f84ebee8d0a38e335b72d860a2b79d85 (diff) | |
pinctrl: qcom: ssbi-gpio: fix gpio-hog related boot issues
[ Upstream commit 7ed07855773814337b9814f1c3e866df52ebce68 ]
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@onstation.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions