exynos4412_gpios_data.c: get_gpio_register_offset: catch up typos faster

Before, if we had a typo in a gpio bank name, we ended up with an error
that looks like this:
    gpio_get_output_value: get_gpio_register_offset failed with error 22: Invalid argument
    exynos-gpio-tool: tests.c:114: test_flash_with_devmem2: Assertion `rc == GPIO_VALUE_LOW' failed.
Now it looks like this:
    get_gpio_register_offset: could not find gpio bank data for gjp1
    gpio_get_output_value: get_gpio_register_offset failed with error 22: Invalid argument

This helps spot typos faster.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/exynos4412_gpios_data.c b/exynos4412_gpios_data.c
index 28c567d..d953752 100644
--- a/exynos4412_gpios_data.c
+++ b/exynos4412_gpios_data.c
@@ -432,12 +432,18 @@ off_t get_gpio_register_offset(int debug, char *gpio_bank_name,
 
 	gpio_bank_data = get_gpio_bank_data(gpio_bank_name);
 	if (gpio_bank_data == NULL) {
+		printf("%s: could not find gpio bank data for %s\n",
+		       __func__, gpio_bank_name);
+
 		errno = EINVAL;
 		return -1;
 	}
 
 	gpio_register_data = get_gpio_register_data(register_name);
 	if (gpio_register_data == NULL) {
+		printf("%s: could not find gpio register data for %s\n",
+		       __func__, register_name);
+
 		errno = EINVAL;
 		return -1;
 	}