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: 2db16c6ed72c ("media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder")
Signed-off-by: Ming Qian <ming.qian@xxxxxxx>
Reviewed-by: TaoJiang <tao.jiang_2@xxxxxxx>
---
drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c
index 1d8913813037..979b03b112f8 100644
--- a/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c
+++ b/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c
@@ -2842,6 +2842,7 @@ static int mxc_jpeg_probe(struct platform_device *pdev)
jpeg->dec_vdev->vfl_dir = VFL_DIR_M2M;
jpeg->dec_vdev->device_caps = V4L2_CAP_STREAMING |
V4L2_CAP_VIDEO_M2M_MPLANE;
+ video_set_drvdata(jpeg->dec_vdev, jpeg);
if (mode == MXC_JPEG_ENCODE) {
v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_DECODER_CMD);
v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_TRY_DECODER_CMD);
@@ -2854,7 +2855,6 @@ static int mxc_jpeg_probe(struct platform_device *pdev)
dev_err(dev, "failed to register video device\n");
goto err_vdev_register;
}
- video_set_drvdata(jpeg->dec_vdev, jpeg);
if (mode == MXC_JPEG_ENCODE)
v4l2_info(&jpeg->v4l2_dev,
"encoder device registered as /dev/video%d (%d,%d)\n",
--
2.43.0-rc1
