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Subject: media: pci: cx23885: check cx23885_vdev_init() return
Author:  Hans Verkuil <[email protected]>
Date:    Thu Oct 19 08:58:49 2023 +0200

cx23885_vdev_init() can return a NULL pointer, but that pointer
is used in the next line without a check.

Add a NULL pointer check and go to the error unwind if it is NULL.

Signed-off-by: Hans Verkuil <[email protected]>
Reported-by: Sicong Huang <[email protected]>

 drivers/media/pci/cx23885/cx23885-video.c | 8 ++++++++
 1 file changed, 8 insertions(+)

---

diff --git a/drivers/media/pci/cx23885/cx23885-video.c 
b/drivers/media/pci/cx23885/cx23885-video.c
index 42fdcf992e48..7d4a409c433e 100644
--- a/drivers/media/pci/cx23885/cx23885-video.c
+++ b/drivers/media/pci/cx23885/cx23885-video.c
@@ -1354,6 +1354,10 @@ int cx23885_video_register(struct cx23885_dev *dev)
        /* register Video device */
        dev->video_dev = cx23885_vdev_init(dev, dev->pci,
                &cx23885_video_template, "video");
+       if (!dev->video_dev) {
+               err = -ENOMEM;
+               goto fail_unreg;
+       }
        dev->video_dev->queue = &dev->vb2_vidq;
        dev->video_dev->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
                                      V4L2_CAP_AUDIO | V4L2_CAP_VIDEO_CAPTURE;
@@ -1382,6 +1386,10 @@ int cx23885_video_register(struct cx23885_dev *dev)
        /* register VBI device */
        dev->vbi_dev = cx23885_vdev_init(dev, dev->pci,
                &cx23885_vbi_template, "vbi");
+       if (!dev->vbi_dev) {
+               err = -ENOMEM;
+               goto fail_unreg;
+       }
        dev->vbi_dev->queue = &dev->vb2_vbiq;
        dev->vbi_dev->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
                                    V4L2_CAP_AUDIO | V4L2_CAP_VBI_CAPTURE;

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