gpio: Update Kconfig text for GPIO_SYSFS
This feature is deprecated, it is helpful to inform users about
this. I'm resisting the temptation to add "depends on BROKEN"
to this, but saving that for later.
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index be832eb..3d17d40 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -62,16 +62,12 @@
bool "/sys/class/gpio/... (sysfs interface)"
depends on SYSFS
help
- Say Y here to add a sysfs interface for GPIOs.
+ Say Y here to add the legacy sysfs interface for GPIOs.
- This is mostly useful to work around omissions in a system's
- kernel support. Those are common in custom and semicustom
- hardware assembled using standard kernels with a minimum of
- custom patches. In those cases, userspace code may import
- a given GPIO from the kernel, if no kernel driver requested it.
-
- Kernel drivers may also request that a particular GPIO be
- exported to userspace; this can be useful when debugging.
+ This ABI is deprecated. If you want to use GPIO from userspace,
+ use the character device /dev/gpiochipN with the appropriate
+ ioctl() operations instead. The character device is always
+ available.
config GPIO_GENERIC
depends on HAS_IOMEM # Only for IOMEM drivers
