[PATCH] drm/amd/powerplay: Off by one in vega20_get_smu_msg_index()

[Dan Carpenter]

The > should be >= so that we don't read one element beyond the end of
the vega20_message_map[] array.

Fixes: 3ec3c931489f ("drm/amd/powerplay: implement smu vega20_message_map for vega20")
Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
---
 drivers/gpu/drm/amd/powerplay/vega20_ppt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
index 7e9e8ad9a300..31cd7b9d4dad 100644
--- a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
@@ -132,7 +132,8 @@ static int vega20_message_map[SMU_MSG_MAX_COUNT] = {
 static int vega20_get_smu_msg_index(struct smu_context *smc, uint32_t index)
 {
 	int val;
-	if (index > SMU_MSG_MAX_COUNT)
+
+	if (index >= SMU_MSG_MAX_COUNT)
 		return -EINVAL;
 
 	val = vega20_message_map[index];
-- 
2.17.1