diff options
| author | Mathias Kresin <dev@kresin.me> | 2018-06-28 18:23:37 +0200 |
|---|---|---|
| committer | Mathias Kresin <dev@kresin.me> | 2018-06-28 18:39:57 +0200 |
| commit | a570933999da5ff4e6a37aecb0ad9a0ac2bf4a09 (patch) | |
| tree | 01eb41daba7c2b57c3633942b7f256b213901c68 /target/linux | |
| parent | 750e4b62b170c7709ebe2524588b35ff9faf0542 (diff) | |
| download | upstream-a570933999da5ff4e6a37aecb0ad9a0ac2bf4a09.tar.gz upstream-a570933999da5ff4e6a37aecb0ad9a0ac2bf4a09.tar.bz2 upstream-a570933999da5ff4e6a37aecb0ad9a0ac2bf4a09.zip | |
treewide: gpio-export: add error handling
Check if the GPIO is valid (or set at all). If no GPIO is set in the
devicetree, a gpiolib related kernel warning + stacktrace is shown during
boot and gpio-export reports GPIOs as exported albeit none really is.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Diffstat (limited to 'target/linux')
3 files changed, 9 insertions, 3 deletions
diff --git a/target/linux/ath79/patches-4.14/0024-GPIO-add-named-gpio-exports.patch b/target/linux/ath79/patches-4.14/0024-GPIO-add-named-gpio-exports.patch index 0c1bc73926..10ca24bc71 100644 --- a/target/linux/ath79/patches-4.14/0024-GPIO-add-named-gpio-exports.patch +++ b/target/linux/ath79/patches-4.14/0024-GPIO-add-named-gpio-exports.patch @@ -22,7 +22,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org> #include "gpiolib.h" -@@ -506,3 +508,69 @@ void of_gpiochip_remove(struct gpio_chip +@@ -506,3 +508,71 @@ void of_gpiochip_remove(struct gpio_chip gpiochip_remove_pin_ranges(chip); of_node_put(chip->of_node); } @@ -56,6 +56,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org> + enum of_gpio_flags of_flags; + + gpio = of_get_gpio_flags(cnp, i, &of_flags); ++ if (!gpio_is_valid(gpio)) ++ return gpio; + + if (of_flags == OF_GPIO_ACTIVE_LOW) + flags |= GPIOF_ACTIVE_LOW; diff --git a/target/linux/lantiq/patches-4.14/0030-GPIO-add-named-gpio-exports.patch b/target/linux/lantiq/patches-4.14/0030-GPIO-add-named-gpio-exports.patch index 30b6a11818..013d802265 100644 --- a/target/linux/lantiq/patches-4.14/0030-GPIO-add-named-gpio-exports.patch +++ b/target/linux/lantiq/patches-4.14/0030-GPIO-add-named-gpio-exports.patch @@ -22,7 +22,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org> #include "gpiolib.h" -@@ -506,3 +508,73 @@ void of_gpiochip_remove(struct gpio_chip +@@ -506,3 +508,75 @@ void of_gpiochip_remove(struct gpio_chip gpiochip_remove_pin_ranges(chip); of_node_put(chip->of_node); } @@ -58,6 +58,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org> + enum of_gpio_flags of_flags; + + gpio = of_get_gpio_flags(cnp, i, &of_flags); ++ if (!gpio_is_valid(gpio)) ++ return gpio; + + if (of_flags == OF_GPIO_ACTIVE_LOW) + flags |= GPIOF_ACTIVE_LOW; diff --git a/target/linux/ramips/patches-4.14/0024-GPIO-add-named-gpio-exports.patch b/target/linux/ramips/patches-4.14/0024-GPIO-add-named-gpio-exports.patch index 0c1bc73926..10ca24bc71 100644 --- a/target/linux/ramips/patches-4.14/0024-GPIO-add-named-gpio-exports.patch +++ b/target/linux/ramips/patches-4.14/0024-GPIO-add-named-gpio-exports.patch @@ -22,7 +22,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org> #include "gpiolib.h" -@@ -506,3 +508,69 @@ void of_gpiochip_remove(struct gpio_chip +@@ -506,3 +508,71 @@ void of_gpiochip_remove(struct gpio_chip gpiochip_remove_pin_ranges(chip); of_node_put(chip->of_node); } @@ -56,6 +56,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org> + enum of_gpio_flags of_flags; + + gpio = of_get_gpio_flags(cnp, i, &of_flags); ++ if (!gpio_is_valid(gpio)) ++ return gpio; + + if (of_flags == OF_GPIO_ACTIVE_LOW) + flags |= GPIOF_ACTIVE_LOW; |