From: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Date: Fri, 24 Mar 2023 07:44:29 +0000 (+0100)
Subject: soc: soc_ti_k3: fix revision array bounds checks
X-Git-Tag: v2023.07~77^2~30
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=45981a9a3759eae8375c85927fb213e4cc14353d;p=platform%2Fkernel%2Fu-boot.git

soc: soc_ti_k3: fix revision array bounds checks

If rev is equal to the array size, we'll access the array
one-past-the-end.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Bryan Brattlof <bb@ti.com>
---

diff --git a/drivers/soc/soc_ti_k3.c b/drivers/soc/soc_ti_k3.c
index 42430d7..b720131 100644
--- a/drivers/soc/soc_ti_k3.c
+++ b/drivers/soc/soc_ti_k3.c
@@ -70,12 +70,12 @@ static const char *get_rev_string(u32 idreg)
 
 	switch (soc) {
 	case JTAG_ID_PARTNO_J721E:
-		if (rev > ARRAY_SIZE(j721e_rev_string_map))
+		if (rev >= ARRAY_SIZE(j721e_rev_string_map))
 			goto bail;
 		return j721e_rev_string_map[rev];
 
 	default:
-		if (rev > ARRAY_SIZE(typical_rev_string_map))
+		if (rev >= ARRAY_SIZE(typical_rev_string_map))
 			goto bail;
 		return typical_rev_string_map[rev];
 	};