From: Bartosz Golaszewski brgl@bgdev.pl
stable inclusion from stable-v5.10.110 commit 8fb7af1b5a8350ad1052051f8c9fe88a22f3064e bugzilla: https://gitee.com/openeuler/kernel/issues/I574AL
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 56e337f2cf1326323844927a04e9dbce9a244835 ]
This reverts commit fc328a7d1fcce263db0b046917a66f3aa6e68719.
This commit - while attempting to fix a regression - has caused a number of other problems. As the fallout from it is more significant than the initial problem itself, revert it for now before we find a correct solution.
Link: https://lore.kernel.org/all/20220314192522.GA3031157@roeck-us.net/ Link: https://lore.kernel.org/stable/20220314155509.552218-1-michael@walle.cc/ Link: https://lore.kernel.org/all/20211217153555.9413-1-marcelo.jimenez@gmail.com/ Signed-off-by: Bartosz Golaszewski brgl@bgdev.pl Reported-and-bisected-by: Guenter Roeck linux@roeck-us.net Reported-by: Michael Walle michael@walle.cc Cc: Thorsten Leemhuis linux@leemhuis.info Cc: Marcelo Roberto Jimenez marcelo.jimenez@gmail.com Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yu Liao liaoyu15@huawei.com Reviewed-by: Wei Li liwei391@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/gpio/gpiolib.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index bbf34d84636d..00526fdd7691 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1804,6 +1804,11 @@ static inline void gpiochip_irqchip_free_valid_mask(struct gpio_chip *gc) */ int gpiochip_generic_request(struct gpio_chip *gc, unsigned offset) { +#ifdef CONFIG_PINCTRL + if (list_empty(&gc->gpiodev->pin_ranges)) + return 0; +#endif + return pinctrl_gpio_request(gc->gpiodev->base + offset); } EXPORT_SYMBOL_GPL(gpiochip_generic_request); @@ -1815,6 +1820,11 @@ EXPORT_SYMBOL_GPL(gpiochip_generic_request); */ void gpiochip_generic_free(struct gpio_chip *gc, unsigned offset) { +#ifdef CONFIG_PINCTRL + if (list_empty(&gc->gpiodev->pin_ranges)) + return; +#endif + pinctrl_gpio_free(gc->gpiodev->base + offset); } EXPORT_SYMBOL_GPL(gpiochip_generic_free);