linux-kernel - [PATCH] gpu:drm:radeon:fix array out fo bouds

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Date:	Sun, 15 May 2016 21:58:11 -0700
From:	Heloise NH <os@...as.ac.cn>
To:	alexander.deucher@....com, christian.koenig@....com,
	airlied@...ux.ie
Cc:	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	os@...as.ac.cn
Subject: [PATCH] gpu:drm:radeon:fix array out fo bouds

From: tom will <os@...as.ac.cn>

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

Signed-off-by: tom will <os@...as.ac.cn>
---
 drivers/gpu/drm/radeon/kv_dpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/kv_dpm.c b/drivers/gpu/drm/radeon/kv_dpm.c
index d024074..a7e9786 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;
-- 
2.1.0