[PATCH v2 1/4] gpio: use sizeof() instead of hardcoded values

[Olliver Schinagl]

From: Olliver Schinagl <oliver@xxxxxxxxxxx>

gpiolib uses a fixed string for the suffixes and defines it at 32 bytes.
Later in the code snprintf is used with this fixed value of 32. Using
sizeof() is safer in case the size for the suffixes is ever changed.

Signed-off-by: Olliver Schinagl <oliver@xxxxxxxxxxx>
---
 drivers/gpio/gpiolib.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index c926641..bf6016d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1665,9 +1665,11 @@ static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
 
 	for (i = 0; i < ARRAY_SIZE(suffixes); i++) {
 		if (con_id)
-			snprintf(prop_name, 32, "%s-%s", con_id, suffixes[i]);
+			snprintf(prop_name, sizeof(prop_name), "%s-%s", con_id,
+							       suffixes[i]);
 		else
-			snprintf(prop_name, 32, "%s", suffixes[i]);
+			snprintf(prop_name, sizeof(prop_name), "%s",
+							       suffixes[i]);
 
 		desc = of_get_named_gpiod_flags(dev->of_node, prop_name, idx,
 						&of_flags);
-- 
2.1.4

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