From 7c49c1298f3ab3331008e85ac22b2d32b4bb450f Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Fri, 4 Jul 2025 14:58:51 +0200 Subject: [PATCH] gpio: sysfs: pass gpiod_data directly to internal GPIO sysfs functions We don't use any fields from struct device in gpio_sysfs_request_irq(), gpio_sysfs_free_irq() and gpio_sysfs_set_active_low(). We only use the dev argument to get the associated struct gpiod_data pointer with dev_get_drvdata(). To make the transition to not using dev_get_drvdata() across line callbacks for sysfs attributes easier, pass gpiod_data directly to these functions instead of having it wrapped in struct device. Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-4-9289d8758243@linaro.org Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpiolib-sysfs.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c index 39e9ca31f034e..0cfa73e92b47f 100644 --- a/drivers/gpio/gpiolib-sysfs.c +++ b/drivers/gpio/gpiolib-sysfs.c @@ -162,9 +162,8 @@ static irqreturn_t gpio_sysfs_irq(int irq, void *priv) } /* Caller holds gpiod-data mutex. */ -static int gpio_sysfs_request_irq(struct device *dev, unsigned char flags) +static int gpio_sysfs_request_irq(struct gpiod_data *data, unsigned char flags) { - struct gpiod_data *data = dev_get_drvdata(dev); struct gpio_desc *desc = data->desc; unsigned long irq_flags; int ret; @@ -223,9 +222,8 @@ err_clr_bits: * Caller holds gpiod-data mutex (unless called after class-device * deregistration). */ -static void gpio_sysfs_free_irq(struct device *dev) +static void gpio_sysfs_free_irq(struct gpiod_data *data) { - struct gpiod_data *data = dev_get_drvdata(dev); struct gpio_desc *desc = data->desc; CLASS(gpio_chip_guard, guard)(desc); @@ -278,12 +276,12 @@ static ssize_t edge_store(struct device *dev, struct device_attribute *attr, return size; if (data->irq_flags) - gpio_sysfs_free_irq(dev); + gpio_sysfs_free_irq(data); if (!flags) return size; - status = gpio_sysfs_request_irq(dev, flags); + status = gpio_sysfs_request_irq(data, flags); if (status) return status; @@ -294,9 +292,8 @@ static ssize_t edge_store(struct device *dev, struct device_attribute *attr, static DEVICE_ATTR_RW(edge); /* Caller holds gpiod-data mutex. */ -static int gpio_sysfs_set_active_low(struct device *dev, int value) +static int gpio_sysfs_set_active_low(struct gpiod_data *data, int value) { - struct gpiod_data *data = dev_get_drvdata(dev); unsigned int flags = data->irq_flags; struct gpio_desc *desc = data->desc; int status = 0; @@ -309,8 +306,8 @@ static int gpio_sysfs_set_active_low(struct device *dev, int value) /* reconfigure poll(2) support if enabled on one edge only */ if (flags == GPIO_IRQF_TRIGGER_FALLING || flags == GPIO_IRQF_TRIGGER_RISING) { - gpio_sysfs_free_irq(dev); - status = gpio_sysfs_request_irq(dev, flags); + gpio_sysfs_free_irq(data); + status = gpio_sysfs_request_irq(data, flags); } gpiod_line_state_notify(desc, GPIO_V2_LINE_CHANGED_CONFIG); @@ -345,7 +342,7 @@ static ssize_t active_low_store(struct device *dev, guard(mutex)(&data->mutex); - return gpio_sysfs_set_active_low(dev, value) ?: size; + return gpio_sysfs_set_active_low(data, value) ?: size; } static DEVICE_ATTR_RW(active_low); @@ -814,7 +811,7 @@ void gpiod_unexport(struct gpio_desc *desc) * edge_store. */ if (data->irq_flags) - gpio_sysfs_free_irq(dev); + gpio_sysfs_free_irq(data); } put_device(dev); -- 2.47.2