[PATCH u-boot-marvell 10/16] tools: kwbimage: Add missing check for maximal value for DATA_DELAY

[Pali Rohár]

Data delay is stored as 8-bit number in kwbimage structure. Ensure the
given value is at most 255.

Signed-off-by: Pali Rohár <pali at kernel.org>
Reviewed-by: Marek Behún <marek.behun at nic.cz>
---
 tools/kwbimage.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index 7759a5f94098..4b3b40ce24fb 100644
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -1610,6 +1610,10 @@ static int image_create_config_parse_oneline(char *line,
 			el->regdata_delay = REGISTER_SET_HDR_OPT_DELAY_SDRAM_SETUP;
 		else
 			el->regdata_delay = REGISTER_SET_HDR_OPT_DELAY_MS(strtoul(value1, NULL, 10));
+		if (el->regdata_delay > 255) {
+			fprintf(stderr, "Maximal DATA_DELAY is 255\n");
+			return -1;
+		}
 		break;
 	case IMAGE_CFG_BAUDRATE:
 		el->baudrate = strtoul(value1, NULL, 10);
-- 
2.20.1