diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2019-05-23 08:54:19 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-05-28 10:28:15 +0200 |
| commit | db9477f8b549b12943f513c18c7b10acd7d97e6e (patch) | |
| tree | 0b4b5c44dfc06023bbd33f901137dc3e5336efa9 | |
| parent | 663ba742d2fe2eb1bcf40261fc8532d793c9d0a0 (diff) | |
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>
| -rw-r--r-- | drivers/gpio/Kconfig | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index be832eb73627..3d17d40fa635 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -62,16 +62,12 @@ config GPIO_SYSFS 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 |