diff options
Diffstat (limited to 'drivers/media/video/s2255drv.c')
| -rw-r--r-- | drivers/media/video/s2255drv.c | 44 |
1 files changed, 10 insertions, 34 deletions
diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c index f5a46c458717..b63f8cafa671 100644 --- a/drivers/media/video/s2255drv.c +++ b/drivers/media/video/s2255drv.c @@ -49,7 +49,6 @@ #include <linux/videodev2.h> #include <linux/version.h> #include <linux/mm.h> -#include <linux/smp_lock.h> #include <media/videobuf-vmalloc.h> #include <media/v4l2-common.h> #include <media/v4l2-device.h> @@ -269,7 +268,7 @@ struct s2255_dev { struct v4l2_device v4l2_dev; atomic_t num_channels; int frames; - struct mutex lock; + struct mutex lock; /* channels[].vdev.lock */ struct mutex open_lock; struct usb_device *udev; struct usb_interface *interface; @@ -781,20 +780,14 @@ static struct videobuf_queue_ops s2255_video_qops = { static int res_get(struct s2255_fh *fh) { - struct s2255_dev *dev = fh->dev; - /* is it free? */ struct s2255_channel *channel = fh->channel; - mutex_lock(&dev->lock); - if (channel->resources) { - /* no, someone else uses it */ - mutex_unlock(&dev->lock); - return 0; - } + /* is it free? */ + if (channel->resources) + return 0; /* no, someone else uses it */ /* it's free, grab it */ channel->resources = 1; fh->resources = 1; dprintk(1, "s2255: res: get\n"); - mutex_unlock(&dev->lock); return 1; } @@ -812,11 +805,8 @@ static int res_check(struct s2255_fh *fh) static void res_free(struct s2255_fh *fh) { struct s2255_channel *channel = fh->channel; - struct s2255_dev *dev = fh->dev; - mutex_lock(&dev->lock); channel->resources = 0; fh->resources = 0; - mutex_unlock(&dev->lock); dprintk(1, "res: put\n"); } @@ -1107,15 +1097,6 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) return rc; } -#ifdef CONFIG_VIDEO_V4L1_COMPAT -static int vidioc_cgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) -{ - struct s2255_fh *fh = priv; - - return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); -} -#endif - /* write to the configuration pipe, synchronously */ static int s2255_write_config(struct usb_device *udev, unsigned char *pbuf, int size) @@ -1219,7 +1200,6 @@ static int s2255_set_mode(struct s2255_channel *channel, __le32 *buffer; unsigned long chn_rev; struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev); - mutex_lock(&dev->lock); chn_rev = G_chnmap[channel->idx]; dprintk(3, "%s channel: %d\n", __func__, channel->idx); /* if JPEG, set the quality */ @@ -1236,7 +1216,6 @@ static int s2255_set_mode(struct s2255_channel *channel, buffer = kzalloc(512, GFP_KERNEL); if (buffer == NULL) { dev_err(&dev->udev->dev, "out of mem\n"); - mutex_unlock(&dev->lock); return -ENOMEM; } /* set the mode */ @@ -1261,7 +1240,6 @@ static int s2255_set_mode(struct s2255_channel *channel, } /* clear the restart flag */ channel->mode.restart = 0; - mutex_unlock(&dev->lock); dprintk(1, "%s chn %d, result: %d\n", __func__, channel->idx, res); return res; } @@ -1272,13 +1250,11 @@ static int s2255_cmd_status(struct s2255_channel *channel, u32 *pstatus) __le32 *buffer; u32 chn_rev; struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev); - mutex_lock(&dev->lock); chn_rev = G_chnmap[channel->idx]; dprintk(4, "%s chan %d\n", __func__, channel->idx); buffer = kzalloc(512, GFP_KERNEL); if (buffer == NULL) { dev_err(&dev->udev->dev, "out of mem\n"); - mutex_unlock(&dev->lock); return -ENOMEM; } /* form the get vid status command */ @@ -1298,7 +1274,6 @@ static int s2255_cmd_status(struct s2255_channel *channel, u32 *pstatus) } *pstatus = channel->vidstatus; dprintk(4, "%s, vid status %d\n", __func__, *pstatus); - mutex_unlock(&dev->lock); return res; } @@ -1817,7 +1792,8 @@ static int s2255_open(struct file *file) NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, - sizeof(struct s2255_buffer), fh, NULL); + sizeof(struct s2255_buffer), + fh, vdev->lock); return 0; } @@ -1900,7 +1876,7 @@ static const struct v4l2_file_operations s2255_fops_v4l = { .open = s2255_open, .release = s2255_release, .poll = s2255_poll, - .ioctl = video_ioctl2, /* V4L2 ioctl handler */ + .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */ .mmap = s2255_mmap_v4l, }; @@ -1924,9 +1900,6 @@ static const struct v4l2_ioctl_ops s2255_ioctl_ops = { .vidioc_s_ctrl = vidioc_s_ctrl, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, -#ifdef CONFIG_VIDEO_V4L1_COMPAT - .vidiocgmbuf = vidioc_cgmbuf, -#endif .vidioc_s_jpegcomp = vidioc_s_jpegcomp, .vidioc_g_jpegcomp = vidioc_g_jpegcomp, .vidioc_s_parm = vidioc_s_parm, @@ -1970,6 +1943,7 @@ static int s2255_probe_v4l(struct s2255_dev *dev) channel->vidq.dev = dev; /* register 4 video devices */ channel->vdev = template; + channel->vdev.lock = &dev->lock; channel->vdev.v4l2_dev = &dev->v4l2_dev; video_set_drvdata(&channel->vdev, channel); if (video_nr == -1) @@ -2676,7 +2650,9 @@ static void s2255_disconnect(struct usb_interface *interface) struct s2255_dev *dev = to_s2255_dev(usb_get_intfdata(interface)); int i; int channels = atomic_read(&dev->num_channels); + mutex_lock(&dev->lock); v4l2_device_disconnect(&dev->v4l2_dev); + mutex_unlock(&dev->lock); /*see comments in the uvc_driver.c usb disconnect function */ atomic_inc(&dev->num_channels); /* unregister each video device. */ |