From: Hangyu Hua <hbh25y@gmail.com>
To: narmstrong@baylibre.com, mchehab@kernel.org,
khilman@baylibre.com, jbrunet@baylibre.com,
martin.blumenstingl@googlemail.com, bin.liu@mediatek.com,
matthias.bgg@gmail.com, m.szyprowski@samsung.com,
andrzej.hajda@intel.com
Cc: linux-media@vger.kernel.org, linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
Hangyu Hua <hbh25y@gmail.com>
Subject: [PATCH] media: platform: fix some double free in meson-ge2d and mtk-jpeg and s5p-mfc
Date: Tue, 16 Aug 2022 16:58:19 +0800 [thread overview]
Message-ID: <20220816085819.39108-1-hbh25y@gmail.com> (raw)
video_unregister_device will release device internally. There is no need to
call video_device_release after video_unregister_device.
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
---
drivers/media/platform/amlogic/meson-ge2d/ge2d.c | 1 -
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 1 -
drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c | 3 +--
3 files changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/media/platform/amlogic/meson-ge2d/ge2d.c b/drivers/media/platform/amlogic/meson-ge2d/ge2d.c
index 5e7b319f300d..142d421a8d76 100644
--- a/drivers/media/platform/amlogic/meson-ge2d/ge2d.c
+++ b/drivers/media/platform/amlogic/meson-ge2d/ge2d.c
@@ -1030,7 +1030,6 @@ static int ge2d_remove(struct platform_device *pdev)
video_unregister_device(ge2d->vfd);
v4l2_m2m_release(ge2d->m2m_dev);
- video_device_release(ge2d->vfd);
v4l2_device_unregister(&ge2d->v4l2_dev);
clk_disable_unprepare(ge2d->clk);
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 87685a62a5c2..3071b61946c3 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -1414,7 +1414,6 @@ static int mtk_jpeg_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
video_unregister_device(jpeg->vdev);
- video_device_release(jpeg->vdev);
v4l2_m2m_release(jpeg->m2m_dev);
v4l2_device_unregister(&jpeg->v4l2_dev);
diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c
index 761341934925..f85d1eebafac 100644
--- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c
@@ -1399,6 +1399,7 @@ static int s5p_mfc_probe(struct platform_device *pdev)
/* Deinit MFC if probe had failed */
err_enc_reg:
video_unregister_device(dev->vfd_dec);
+ dev->vfd_dec = NULL;
err_dec_reg:
video_device_release(dev->vfd_enc);
err_enc_alloc:
@@ -1444,8 +1445,6 @@ static int s5p_mfc_remove(struct platform_device *pdev)
video_unregister_device(dev->vfd_enc);
video_unregister_device(dev->vfd_dec);
- video_device_release(dev->vfd_enc);
- video_device_release(dev->vfd_dec);
v4l2_device_unregister(&dev->v4l2_dev);
s5p_mfc_unconfigure_dma_memory(dev);
--
2.25.1
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reply other threads:[~2022-08-16 8:59 UTC|newest]
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