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media: amphion: Set video drvdata before register video device

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BugLink: https://bugs.launchpad.net/bugs/2101915

commit 8cbb1a7bd5973b57898b26eb804fe44af440bb63 upstream.

The video drvdata should be set before the video device is registered,
otherwise video_drvdata() may return NULL in the open() file ops, and led
to oops.

Fixes: 3cd084519c ("media: amphion: add vpu v4l2 m2m support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Reviewed-by: TaoJiang <tao.jiang_2@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CVE-2024-56579
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Ming Qian
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent ae45f4e552
commit fd34224479
1 changed files with 1 additions and 1 deletions
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drivers/media/platform/amphion/vpu_v4l2.c
+1 -1
View File
@@ -825,6 +825,7 @@ int vpu_add_func(struct vpu_dev *vpu, struct vpu_func *func)
vfd->fops = vdec_get_fops();
vfd->ioctl_ops = vdec_get_ioctl_ops();
}
video_set_drvdata(vfd, vpu);
ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
if (ret) {
@@ -832,7 +833,6 @@ int vpu_add_func(struct vpu_dev *vpu, struct vpu_func *func)
v4l2_m2m_release(func->m2m_dev);
return ret;
}
video_set_drvdata(vfd, vpu);
func->vfd = vfd;
ret = v4l2_m2m_register_media_controller(func->m2m_dev, func->vfd, func->function);