linux-kernel - [PATCH] drm/amd/powerplay: fix memory leak of tdp

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Date:	Fri, 18 Mar 2016 16:47:29 +0000
From:	Colin King <colin.king@...onical.com>
To:	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	Dave Airlie <airlied@...hat.com>,
	Tom St Denis <tom.stdenis@....com>,
	Rex Zhu <Rex.Zhu@....com>, Jammy Zhou <Jammy.Zhou@....com>,
	Ken Wang <Qingqing.Wang@....com>,
	yanyang1 <young.yang@....com>, dri-devel@...ts.freedesktop.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] drm/amd/powerplay: fix memory leak of tdp_table

From: Colin Ian King <colin.king@...onical.com>

tdp_table is being leaked on failed allocations of
hwmgr->dyn_state.cac_dtp_table. kfree tdp_table on the error
return path to fix the leak.

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/tonga_processpptables.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_processpptables.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_processpptables.c
index 34f4bef..b156481 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_processpptables.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_processpptables.c
@@ -512,8 +512,10 @@ static int get_cac_tdp_table(
 
 	hwmgr->dyn_state.cac_dtp_table = kzalloc(table_size, GFP_KERNEL);
 
-	if (NULL == hwmgr->dyn_state.cac_dtp_table)
+	if (NULL == hwmgr->dyn_state.cac_dtp_table) {
+		kfree(tdp_table);
 		return -ENOMEM;
+	}
 
 	memset(hwmgr->dyn_state.cac_dtp_table, 0x00, table_size);
 
-- 
2.7.3