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authorLaxman Dewangan <ldewangan@nvidia.com>2016-03-11 19:13:21 +0530
committerLinus Walleij <linus.walleij@linaro.org>2016-04-14 14:50:49 +0200
commitc31a571d4360a7765613615709627e83059ce946 (patch)
tree57450e218e81f851ca0ebc818327ca6bacc29fd0 /drivers
parentd1279d94b4e47c3684f936ed6b6c89d3dd2cd5b9 (diff)
gpio: gpiolib: Print error number if gpio hog failed
Print the error number of GPIO hog failed during its configurations. This helps in identifying the failure without instrumenting the code. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpio/gpiolib.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 1edc830a1b51..59a0d8e98a04 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2702,15 +2702,16 @@ int gpiod_hog(struct gpio_desc *desc, const char *name,
local_desc = gpiochip_request_own_desc(chip, hwnum, name);
if (IS_ERR(local_desc)) {
- pr_err("requesting hog GPIO %s (chip %s, offset %d) failed\n",
- name, chip->label, hwnum);
- return PTR_ERR(local_desc);
+ status = PTR_ERR(local_desc);
+ pr_err("requesting hog GPIO %s (chip %s, offset %d) failed, %d\n",
+ name, chip->label, hwnum, status);
+ return status;
}
status = gpiod_configure_flags(desc, name, dflags);
if (status < 0) {
- pr_err("setup of hog GPIO %s (chip %s, offset %d) failed\n",
- name, chip->label, hwnum);
+ pr_err("setup of hog GPIO %s (chip %s, offset %d) failed, %d\n",
+ name, chip->label, hwnum, status);
gpiochip_free_own_desc(desc);
return status;
}