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Subject[PATCH] pinctrl: documentation update
Date
From: Linus Walleij <linus.walleij@linaro.org>

Update the docs removing an obsolete __refdata tag and document
the mysterious return value of pin_free().

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Documentation/pinctrl.txt | 2 +-
drivers/pinctrl/pinmux.c | 4 ++++
2 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/Documentation/pinctrl.txt b/Documentation/pinctrl.txt
index 328adb7..a05e23b 100644
--- a/Documentation/pinctrl.txt
+++ b/Documentation/pinctrl.txt
@@ -59,7 +59,7 @@ this in our driver:

#include <linux/pinctrl/pinctrl.h>

-const struct pinctrl_pin_desc __refdata foo_pins[] = {
+const struct pinctrl_pin_desc foo_pins[] = {
PINCTRL_PIN(0, "A1"),
PINCTRL_PIN(1, "A2"),
PINCTRL_PIN(2, "A3"),
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index 06bee1b..6738162 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -178,6 +178,10 @@ out:
* @pin: the pin to free
* @gpio_range: the range matching the GPIO pin if this is a request for a
* single GPIO pin
+ *
+ * This function returns a pointer to the function name in use. This is used
+ * for callers that dynamically allocate a function name so it can be free:ed
+ * once the pin is free. This is done for GPIO request functions.
*/
static const char *pin_free(struct pinctrl_dev *pctldev, int pin,
struct pinctrl_gpio_range *gpio_range)
--
1.7.3.2


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