6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ming Qian ming.qian@nxp.com
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: 3cd084519c6f ("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 --- drivers/media/platform/amphion/vpu_v4l2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/platform/amphion/vpu_v4l2.c +++ b/drivers/media/platform/amphion/vpu_v4l2.c @@ -825,6 +825,7 @@ int vpu_add_func(struct vpu_dev *vpu, st 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, st 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);