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gpio: gpiolib: Print error number if gpio hog failed

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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>
This commit is contained in:
Laxman Dewangan 2016-03-11 19:13:21 +05:30 committed by Linus Walleij
parent d1279d94b4
commit c31a571d43
1 changed files with 6 additions and 5 deletions
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11
drivers/gpio/gpiolib.c
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@ -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;
}