board: phytec: phytec_som_detection: Add missing assignment

Assign the return value of snprintf (total length) to a variable to
properly check if the string has the correct length.

Currently, this variable is always zero and the length check after
snprintf will always fail.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>

diff --git a/board/phytec/common/phytec_som_detection.c b/board/phytec/common/phytec_som_detection.c
index 136f4486eb0e5a7b3d783b80cea4f602cddbdd24..ff1711c24b499f57482effbd45417f91c75da98b 100644 (file)
--- a/board/phytec/common/phytec_som_detection.c
+++ b/board/phytec/common/phytec_som_detection.c
@@ -346,8 +346,8 @@ static int phytec_get_part_number(struct phytec_eeprom_data *data,
                return 0;
        }
        if (api2->som_type <= 3) {
-               snprintf(part, PHYTEC_PART_NUMBER_MAX_LEN + 1, "%s.%s",
-                        product_name, api2->bom_rev);
+               len = snprintf(part, PHYTEC_PART_NUMBER_MAX_LEN + 1, "%s.%s",
+                              product_name, api2->bom_rev);
                if (len != PHYTEC_PART_NUMBER_KSP_LEN)
                        return -EINVAL;
                return 0;