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>
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 1edc830..59a0d8e 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2702,15 +2702,16 @@
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;
}