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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2010-05-26 23:42:18 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-27 18:12:41 +0200
commit7839ec78214ecf477cc9e2862233b8d9fcf4ec58 (patch)
tree2adf5796b9eb1cbae7196f11c0751add4ede9413
parentgpiolib: a gpio is unsigned, so use %u to print it (diff)
downloadlinux-7839ec78214ecf477cc9e2862233b8d9fcf4ec58.tar.xz
linux-7839ec78214ecf477cc9e2862233b8d9fcf4ec58.zip
gpiolib: document that names can contain printk format specifiers
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/asm-generic/gpio.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index bc0c14da7162..fb1ecf8baa90 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -60,7 +60,9 @@ struct module;
* @names: if set, must be an array of strings to use as alternative
* names for the GPIOs in this chip. Any entry in the array
* may be NULL if there is no alias for the GPIO, however the
- * array must be @ngpio entries long.
+ * array must be @ngpio entries long. A name can include a single printk
+ * format specifier for an unsigned int. It is substituted by the actual
+ * number of the gpio.
*
* A gpio_chip can help platforms abstract various sources of GPIOs so
* they can all be accessed through a common programing interface.