From c0a2ec956d6e61081b6f98b839b0e28979941687 Mon Sep 17 00:00:00 2001 From: Dean Anderson Date: Thu, 8 Apr 2010 23:40:31 -0300 Subject: [PATCH] V4L/DVB: s2255drv: video_device_alloc call not checked fix 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/s2255drv.c | 42 ++++++++++++++++------------------ 1 file changed, 20 insertions(+), 22 deletions(-) diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c index 91f7e9538f6e..4c5d3672e2db 100644 --- a/drivers/media/video/s2255drv.c +++ b/drivers/media/video/s2255drv.c @@ -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); -- GitLab