commit 34bdab2418526b46818d730985a7bf0693e28ab0
author Raef Coles <raef.coles@arm.com> Fri Jul 14 12:59:29 2023 +0100
committer David Hu <david.hu@arm.com> Wed Jul 19 08:30:53 2023 +0200
tree 561f7a3adf803b384c32eae4d0ec59dacbffaa53
parent 4a8838428ca5a65992eebd3faecd79359fc96404

RSS: Remove VLA from otp_lcm

Change-Id: I0c1a42914b31cf234fd612e8fbe19306d463c57b
Signed-off-by: Raef Coles <raef.coles@arm.com>

platform/ext/target/arm/rss/common/otp_lcm.c

diff --git a/platform/ext/target/arm/rss/common/otp_lcm.c b/platform/ext/target/arm/rss/common/otp_lcm.c
index 3f6faee..4ecd81b 100644
--- a/platform/ext/target/arm/rss/common/otp_lcm.c
+++ b/platform/ext/target/arm/rss/common/otp_lcm.c
@@ -274,10 +274,20 @@
 
 static uint32_t count_otp_zero_bits(uint32_t offset, uint32_t len)
 {
-    uint8_t buf[len];
+    uint8_t buf[128];
+    uint32_t zero_count = 0;
+
+    while (len > sizeof(buf)) {
+        otp_read(offset, sizeof(buf), sizeof(buf), buf);
+        zero_count += count_buffer_zero_bits(buf, sizeof(buf));
+        len -= sizeof(buf);
+        offset += sizeof(buf);
+    }
 
     otp_read(offset, len, len, buf);
-    return count_buffer_zero_bits(buf, len);
+    zero_count += count_buffer_zero_bits(buf, len);
+
+    return zero_count;
 }
 
 static enum tfm_plat_err_t verify_zero_bits_count(uint32_t offset,