[PATCH] drm/msm/dpu: Fix memory leak in msm_mdss_parse_data_bus_icc_path

From: Miaoqian Lin
Date: Tue Dec 06 2022 - 02:55:29 EST


of_icc_get() alloc resources for path1, we should release it when not
need anymore. Early return when IS_ERR_OR_NULL(path0) may leak path1.
Add icc_put(path1) in the error path to fix this.

Fixes: b9364eed9232 ("drm/msm/dpu: Move min BW request and full BW disable back to mdss")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
---
drivers/gpu/drm/msm/msm_mdss.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c
index e13c5c12b775..a38fa9a9a3d6 100644
--- a/drivers/gpu/drm/msm/msm_mdss.c
+++ b/drivers/gpu/drm/msm/msm_mdss.c
@@ -49,8 +49,10 @@ static int msm_mdss_parse_data_bus_icc_path(struct device *dev,
struct icc_path *path0 = of_icc_get(dev, "mdp0-mem");
struct icc_path *path1 = of_icc_get(dev, "mdp1-mem");

- if (IS_ERR_OR_NULL(path0))
+ if (IS_ERR_OR_NULL(path0)) {
+ icc_put(path1);
return PTR_ERR_OR_ZERO(path0);
+ }

msm_mdss->path[0] = path0;
msm_mdss->num_paths = 1;
--
2.25.1