diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2018-08-02 14:11:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-19 23:43:38 +0300 |
| commit | 16aa222d2293a9af37e33b350042ab2997a30dac (patch) | |
| tree | 0ce4ef501a0b56946a29aff069319954fb8081c1 /drivers/gpio | |
| parent | fb281ed2e4dc876f749bad95128678d9b724d933 (diff) | |
| download | linux-16aa222d2293a9af37e33b350042ab2997a30dac.tar.xz | |
gpio: tegra: Move driver registration to subsys_init level
[ Upstream commit 40b25bce0adbe641a744d1291bc0e51fb7f3c3d8 ]
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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index fbaf974277df..1eb857e2f62f 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -728,4 +728,4 @@ static int __init tegra_gpio_init(void) { return platform_driver_register(&tegra_gpio_driver); } -postcore_initcall(tegra_gpio_init); +subsys_initcall(tegra_gpio_init); |