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    pinctrl: qcom: ssbi-gpio: fix gpio-hog related boot issues · 095fe930
    Brian Masney 提交于
    [ 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 a86caa9b ("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: NBrian Masney <masneyb@onstation.org>
    Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
    Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
    Signed-off-by: NSasha Levin <sashal@kernel.org>
    095fe930
pinctrl-ssbi-gpio.c 20.2 KB