diff options
| author | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-01-28 00:14:15 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-02-12 12:51:26 +0300 |
| commit | 8a5b477bb3e9c891eb064accabb3162ccf2c590e (patch) | |
| tree | af33f7af9dbaf2594ab1a8fa25bd2e463cb676f3 /drivers/gpio/gpiolib.h | |
| parent | c5cf334dcc78185da08b1f5df2d754cc7bf02669 (diff) | |
| download | linux-8a5b477bb3e9c891eb064accabb3162ccf2c590e.tar.xz | |
gpio: add the can_sleep flag to struct gpio_device
Duplicating the can_sleep value in GPIO device will allow us to not
needlessly dereference the chip pointer in several places and reduce the
number of SRCU read-only critical sections.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/gpio/gpiolib.h')
| -rw-r--r-- | drivers/gpio/gpiolib.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h index 9b7afe87f1bd..43ff4931e2c3 100644 --- a/drivers/gpio/gpiolib.h +++ b/drivers/gpio/gpiolib.h @@ -34,6 +34,8 @@ * @descs: array of ngpio descriptors. * @ngpio: the number of GPIO lines on this GPIO device, equal to the size * of the @descs array. + * @can_sleep: indicate whether the GPIO chip driver's callbacks can sleep + * implying that they cannot be used from atomic context * @base: GPIO base in the DEPRECATED global Linux GPIO numberspace, assigned * at device creation time. * @label: a descriptive name for the GPIO device, such as the part number @@ -64,6 +66,7 @@ struct gpio_device { struct gpio_desc *descs; int base; u16 ngpio; + bool can_sleep; const char *label; void *data; struct list_head list; |