[PATCH] gpio: Update Kconfig text for GPIO_SYSFS

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

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.

Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
 drivers/gpio/Kconfig | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 8023d03ec362..a10b821e1d92 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -61,16 +61,12 @@ 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
-- 
2.20.1