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| author | Johan Hovold <johan@kernel.org> | 2015-05-04 17:10:31 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-05-12 10:46:44 +0200 |
| commit | 6a4b6b0a3b55f23f4cc9ad85a1539c581bcb0874 (patch) | |
| tree | 2c4e625f5c707fdea60096b8aa64c991f19b217a /include/linux/gpio | |
| parent | 3ff74be5c1a72df6d304dcb453f68e3c3bea3bdd (diff) | |
| download | lwn-6a4b6b0a3b55f23f4cc9ad85a1539c581bcb0874.tar.gz lwn-6a4b6b0a3b55f23f4cc9ad85a1539c581bcb0874.zip | |
gpio: sysfs: clean up chip class-device handling
Clean gpio-chip class device registration and deregistration.
The class device is registered when a gpio-chip is added (or from
gpiolib_sysfs_init post-core init call), and deregistered when the chip
is removed.
Store the class device in struct gpio_chip directly rather than do a
class-device lookup on deregistration. This also removes the need for
the exported flag.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/driver.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index f1b36593ec9f..2c1e639f66bd 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -20,6 +20,7 @@ struct seq_file; * struct gpio_chip - abstract a GPIO controller * @label: for diagnostics * @dev: optional device providing the GPIOs + * @cdev: class device used by sysfs interface (may be NULL) * @owner: helps prevent removal of modules exporting active GPIOs * @list: links gpio_chips together for traversal * @request: optional hook for chip-specific activation, such as @@ -57,7 +58,6 @@ struct seq_file; * implies that if the chip supports IRQs, these IRQs need to be threaded * as the chip access may sleep when e.g. reading out the IRQ status * registers. - * @exported: flags if the gpiochip is exported for use from sysfs. Private. * @irq_not_threaded: flag must be set if @can_sleep is set but the * IRQs don't need to be threaded * @@ -74,6 +74,7 @@ struct seq_file; struct gpio_chip { const char *label; struct device *dev; + struct device *cdev; struct module *owner; struct list_head list; @@ -109,7 +110,6 @@ struct gpio_chip { const char *const *names; bool can_sleep; bool irq_not_threaded; - bool exported; #ifdef CONFIG_GPIOLIB_IRQCHIP /* |