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authorDmitry Osipenko <digetx@gmail.com>2018-08-02 14:11:44 +0300
committerLinus Walleij <linus.walleij@linaro.org>2018-08-03 20:26:03 +0300
commit40b25bce0adbe641a744d1291bc0e51fb7f3c3d8 (patch)
tree8e4644846d560092ebde1bed2ccf0198f786937a /drivers/gpio/gpio-tegra.c
parent1e0813ee5599932c856bda64a568895ed7a33d3a (diff)
downloadlinux-40b25bce0adbe641a744d1291bc0e51fb7f3c3d8.tar.xz
gpio: tegra: Move driver registration to subsys_init level
There is a bug in regards to deferred probing within the drivers core that causes GPIO-driver to suspend after its users. The bug appears if GPIO-driver probe is getting deferred, which happens after introducing dependency on PINCTRL-driver for the GPIO-driver by defining "gpio-ranges" property in device-tree. The bug in the drivers core is old (more than 4 years now) and is well known, unfortunately there is no easy fix for it. The good news is that we can workaround the deferred probe issue by changing GPIO / PINCTRL drivers registration order and hence by moving PINCTRL driver registration to the arch_init level and GPIO to the subsys_init. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-tegra.c')
-rw-r--r--drivers/gpio/gpio-tegra.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 94396caaca75..d5d79727c55d 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -720,4 +720,4 @@ static int __init tegra_gpio_init(void)
{
return platform_driver_register(&tegra_gpio_driver);
}
-postcore_initcall(tegra_gpio_init);
+subsys_initcall(tegra_gpio_init);