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Subject[PATCH AUTOSEL 4.18 009/131] gpio: tegra: Move driver registration to subsys_init level
From: Dmitry Osipenko <>

[ 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

Signed-off-by: Dmitry Osipenko <>
Acked-by: Stefan Agner <>
Signed-off-by: Linus Walleij <>
Signed-off-by: Sasha Levin <>
drivers/gpio/gpio-tegra.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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);
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