| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 224/545] drm/exynos/exynos7_drm_decon: free resources when clk_set_parent() failed. | Date | Fri, 19 Aug 2022 17:39:54 +0200 |
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From: Jian Zhang <zhangjian210@huawei.com>
[ 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@huawei.com> Signed-off-by: Jian Zhang <zhangjian210@huawei.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/gpu/drm/exynos/exynos7_drm_decon.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c index f2d87a7445c7..1c04c232dce1 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 -- 2.35.1
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