From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Tue, 26 Mar 2019 15:21:14 +0000 (+0200)
Subject: gpiolib: Don't WARN on gpiod_put() for optional GPIO
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=1d7765ba15aca68f3bc52f59434c1c34855bbb54;p=openwrt%2Fstaging%2Fblogic.git

gpiolib: Don't WARN on gpiod_put() for optional GPIO

In case of debug and optional GPIO requested, the gpiod_put() is not aware of
and will WARN, which is not the case.

Make gpiod_put() NULL-aware to keep silent for optional GPIOs.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 144af0733581..36445e24ee89 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -4616,7 +4616,8 @@ EXPORT_SYMBOL_GPL(gpiod_get_array_optional);
  */
 void gpiod_put(struct gpio_desc *desc)
 {
-	gpiod_free(desc);
+	if (desc)
+		gpiod_free(desc);
 }
 EXPORT_SYMBOL_GPL(gpiod_put);