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@xxxxxxxxxx>
---
Changes from V1:
- Keep originality of error message, just add the error number.
- It makes line to be >80 for string and understood that it is
fine for string on some cases.
---
drivers/gpio/gpiolib.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 1741ef4..b682d73 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2680,15 +2680,16 @@ 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;
}
--
2.1.4
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