This is a note to let you know that I've just added the patch titled
drm/exynos/exynos7_drm_decon: free resources when clk_set_parent() failed.
to the 5.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-exynos-exynos7_drm_decon-free-resources-when-clk.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c9a9a947c8eb9729a1d6fd3e580faa0ee73195fa
Author: Jian Zhang <zhangjian210@xxxxxxxxxx>
Date: Tue Jul 12 13:56:11 2022 +0900
drm/exynos/exynos7_drm_decon: free resources when clk_set_parent() failed.
[ Upstream commit 48b927770f8ad3f8cf4a024a552abf272af9f592 ]
In exynos7_decon_resume, When it fails, we must use clk_disable_unprepare()
to free resource that have been used.
Fixes: 6f83d20838c09 ("drm/exynos: use DRM_DEV_ERROR to print out error
message")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Jian Zhang <zhangjian210@xxxxxxxxxx>
Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
index c04264f70ad1..3c31405600f0 100644
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
@@ -800,31 +800,40 @@ static int exynos7_decon_resume(struct device *dev)
if (ret < 0) {
DRM_DEV_ERROR(dev, "Failed to prepare_enable the pclk [%d]\n",
ret);
- return ret;
+ goto err_pclk_enable;
}
ret = clk_prepare_enable(ctx->aclk);
if (ret < 0) {
DRM_DEV_ERROR(dev, "Failed to prepare_enable the aclk [%d]\n",
ret);
- return ret;
+ goto err_aclk_enable;
}
ret = clk_prepare_enable(ctx->eclk);
if (ret < 0) {
DRM_DEV_ERROR(dev, "Failed to prepare_enable the eclk [%d]\n",
ret);
- return ret;
+ goto err_eclk_enable;
}
ret = clk_prepare_enable(ctx->vclk);
if (ret < 0) {
DRM_DEV_ERROR(dev, "Failed to prepare_enable the vclk [%d]\n",
ret);
- return ret;
+ goto err_vclk_enable;
}
return 0;
+
+err_vclk_enable:
+ clk_disable_unprepare(ctx->eclk);
+err_eclk_enable:
+ clk_disable_unprepare(ctx->aclk);
+err_aclk_enable:
+ clk_disable_unprepare(ctx->pclk);
+err_pclk_enable:
+ return ret;
}
#endif
