This is a note to let you know that I've just added the patch titled
drm/exynos: gsc: minor fix for loop iteration in gsc_runtime_resume
to the 5.15-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-gsc-minor-fix-for-loop-iteration-in-gsc_r.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit eb585fbeadb1b7406a02b994114d39b37abbe8ee
Author: Fedor Pchelkin <pchelkin@xxxxxxxxx>
Date: Wed Dec 20 12:53:15 2023 +0300
drm/exynos: gsc: minor fix for loop iteration in gsc_runtime_resume
[ Upstream commit 4050957c7c2c14aa795dbf423b4180d5ac04e113 ]
Do not forget to call clk_disable_unprepare() on the first element of
ctx->clocks array.
Found by Linux Verification Center (linuxtesting.org).
Fixes: 8b7d3ec83aba ("drm/exynos: gsc: Convert driver to IPP v2 core API")
Signed-off-by: Fedor Pchelkin <pchelkin@xxxxxxxxx>
Reviewed-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
index 166a80262896..8c090354fd8a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
@@ -1346,7 +1346,7 @@ static int __maybe_unused gsc_runtime_resume(struct device *dev)
for (i = 0; i < ctx->num_clocks; i++) {
ret = clk_prepare_enable(ctx->clocks[i]);
if (ret) {
- while (--i > 0)
+ while (--i >= 0)
clk_disable_unprepare(ctx->clocks[i]);
return ret;
}
