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V4L/DVB: s2255drv: video_device_alloc call not checked fix

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call to video_device_alloc was not being checked in probe function.
code simplified and uses video_device inside device structure.

Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Dean Anderson 2010-04-08 23:40:31 -03:00 committed by Mauro Carvalho Chehab
parent ab85c6a33c
commit c0a2ec956d
1 changed files with 20 additions and 22 deletions
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42
drivers/media/video/s2255drv.c
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@ -224,6 +224,7 @@ struct s2255_pipeinfo {
struct s2255_fmt; /*forward declaration */
struct s2255_dev {
struct video_device vdev[MAX_CHANNELS];
int frames;
struct mutex lock;
struct mutex open_lock;
@ -233,7 +234,6 @@ struct s2255_dev {
u8 read_endpoint;
struct s2255_dmaqueue vidq[MAX_CHANNELS];
struct video_device *vdev[MAX_CHANNELS];
struct timer_list timer;
struct s2255_fw *fw_data;
struct s2255_pipeinfo pipe;
@ -719,10 +719,10 @@ static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
if (fh->fmt == NULL)
return -EINVAL;
if ((fh->width < norm_minw(fh->dev->vdev[fh->channel])) ||
(fh->width > norm_maxw(fh->dev->vdev[fh->channel])) ||
(fh->height < norm_minh(fh->dev->vdev[fh->channel])) ||
(fh->height > norm_maxh(fh->dev->vdev[fh->channel]))) {
if ((fh->width < norm_minw(&fh->dev->vdev[fh->channel])) ||
(fh->width > norm_maxw(&fh->dev->vdev[fh->channel])) ||
(fh->height < norm_minh(&fh->dev->vdev[fh->channel])) ||
(fh->height > norm_maxh(&fh->dev->vdev[fh->channel]))) {
dprintk(4, "invalid buffer prepare\n");
return -EINVAL;
}
@ -896,7 +896,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
int is_ntsc;
is_ntsc =
(dev->vdev[fh->channel]->current_norm & V4L2_STD_NTSC) ? 1 : 0;
(dev->vdev[fh->channel].current_norm & V4L2_STD_NTSC) ? 1 : 0;
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
@ -1029,9 +1029,9 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
fh->height = f->fmt.pix.height;
fh->vb_vidq.field = f->fmt.pix.field;
fh->type = f->type;
norm = norm_minw(fh->dev->vdev[fh->channel]);
if (fh->width > norm_minw(fh->dev->vdev[fh->channel])) {
if (fh->height > norm_minh(fh->dev->vdev[fh->channel])) {
norm = norm_minw(&fh->dev->vdev[fh->channel]);
if (fh->width > norm_minw(&fh->dev->vdev[fh->channel])) {
if (fh->height > norm_minh(&fh->dev->vdev[fh->channel])) {
if (fh->dev->cap_parm[fh->channel].capturemode &
V4L2_MODE_HIGHQUALITY) {
fh->mode.scale = SCALE_4CIFSI;
@ -1755,7 +1755,7 @@ static int s2255_open(struct file *file)
video_device_node_name(vdev));
lock_kernel();
for (i = 0; i < MAX_CHANNELS; i++)
if (dev->vdev[i] == vdev) {
if (&dev->vdev[i] == vdev) {
cur_channel = i;
break;
}
@ -1985,7 +1985,6 @@ static const struct v4l2_ioctl_ops s2255_ioctl_ops = {
static void s2255_video_device_release(struct video_device *vdev)
{
struct s2255_dev *dev = video_get_drvdata(vdev);
video_device_release(vdev);
kref_put(&dev->kref, s2255_destroy);
return;
}
@ -2012,19 +2011,18 @@ static int s2255_probe_v4l(struct s2255_dev *dev)
dev->vidq[i].dev = dev;
dev->vidq[i].channel = i;
/* register 4 video devices */
dev->vdev[i] = video_device_alloc();
memcpy(dev->vdev[i], &template, sizeof(struct video_device));
dev->vdev[i]->parent = &dev->interface->dev;
video_set_drvdata(dev->vdev[i], dev);
memcpy(&dev->vdev[i], &template, sizeof(struct video_device));
dev->vdev[i].parent = &dev->interface->dev;
video_set_drvdata(&dev->vdev[i], dev);
if (video_nr == -1)
ret = video_register_device(dev->vdev[i],
ret = video_register_device(&dev->vdev[i],
VFL_TYPE_GRABBER,
video_nr);
else
ret = video_register_device(dev->vdev[i],
ret = video_register_device(&dev->vdev[i],
VFL_TYPE_GRABBER,
cur_nr + i);
video_set_drvdata(dev->vdev[i], dev);
video_set_drvdata(&dev->vdev[i], dev);
if (ret != 0) {
dev_err(&dev->udev->dev,
@ -2721,8 +2719,8 @@ static int s2255_probe(struct usb_interface *interface,
return 0;
errorV4L:
for (i = 0; i < MAX_CHANNELS; i++)
if (dev->vdev[i] && video_is_registered(dev->vdev[i]))
video_unregister_device(dev->vdev[i]);
if (video_is_registered(&dev->vdev[i]))
video_unregister_device(&dev->vdev[i]);
errorBOARDINIT:
s2255_board_shutdown(dev);
errorFWMARKER:
@ -2755,8 +2753,8 @@ static void s2255_disconnect(struct usb_interface *interface)
dev = usb_get_intfdata(interface);
/* unregister each video device. */
for (i = 0; i < MAX_CHANNELS; i++)
if (video_is_registered(dev->vdev[i]))
video_unregister_device(dev->vdev[i]);
if (video_is_registered(&dev->vdev[i]))
video_unregister_device(&dev->vdev[i]);
/* wake up any of our timers */
atomic_set(&dev->fw_data->fw_state, S2255_FW_DISCONNECTING);
wake_up(&dev->fw_data->wait_fw);