[PATCH v2 2/4] soc: renesas: rz-sysc: Fix SoC ID string extraction

[John Madieu]

Fix string length calculation when extracting the SoC ID from the compatible
string. Add +1 to the size calculation to ensure proper string termination when
copying with strncpy().

This prevents potential string trunctation when processing the device tree
compatible string to identify the SoC.

Signed-off-by: John Madieu <john.madieu.xa@xxxxxxxxxxxxxx>
---
New patch introduced in v2, targetting specific fix.

 drivers/soc/renesas/rz-sysc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/renesas/rz-sysc.c b/drivers/soc/renesas/rz-sysc.c
index d34d295831b8..e472fda3995b 100644
--- a/drivers/soc/renesas/rz-sysc.c
+++ b/drivers/soc/renesas/rz-sysc.c
@@ -231,7 +231,7 @@ static int rz_sysc_soc_init(struct rz_sysc *sysc, const struct of_device_id *mat
 
 	soc_id_start = strchr(match->compatible, ',') + 1;
 	soc_id_end = strchr(match->compatible, '-');
-	size = soc_id_end - soc_id_start;
+	size = soc_id_end - soc_id_start + 1;
 	if (size > 32)
 		size = 32;
 	strscpy(soc_id, soc_id_start, size);
-- 
2.25.1