From: tom will <os@iscas.ac.cn>
Date: Mon, 16 May 2016 04:58:11 +0000 (-0700)
Subject: drm/radeon: fix array out of bounds
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a8efd58815a8d8bdca409a4b8319281cd9c24f7f;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

drm/radeon: fix array out of bounds

When the initial value of i is greater than zero,
it may cause endless loop, resulting in array out
of bounds, fix it.

Signed-off-by: tom will <os@iscas.ac.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/kv_dpm.c b/drivers/gpu/drm/radeon/kv_dpm.c
index d0240743a17c..a7e978677937 100644
--- a/drivers/gpu/drm/radeon/kv_dpm.c
+++ b/drivers/gpu/drm/radeon/kv_dpm.c
@@ -2164,7 +2164,7 @@ static void kv_apply_state_adjust_rules(struct radeon_device *rdev,
 	if (pi->caps_stable_p_state) {
 		stable_p_state_sclk = (max_limits->sclk * 75) / 100;
 
-		for (i = table->count - 1; i >= 0; i++) {
+		for (i = table->count - 1; i >= 0; i--) {
 			if (stable_p_state_sclk >= table->entries[i].clk) {
 				stable_p_state_sclk = table->entries[i].clk;
 				break;