diff options
Diffstat (limited to 'drivers/media/video/stk-webcam.c')
| -rw-r--r-- | drivers/media/video/stk-webcam.c | 27 |
1 files changed, 8 insertions, 19 deletions
diff --git a/drivers/media/video/stk-webcam.c b/drivers/media/video/stk-webcam.c index db69bc5556d..edaea496451 100644 --- a/drivers/media/video/stk-webcam.c +++ b/drivers/media/video/stk-webcam.c @@ -27,7 +27,6 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/slab.h> -#include <linux/kref.h> #include <linux/usb.h> #include <linux/mm.h> @@ -560,7 +559,7 @@ static void stk_clean_iso(struct stk_camera *dev) urb = dev->isobufs[i].urb; if (urb) { - if (atomic_read(&dev->urbs_used)) + if (atomic_read(&dev->urbs_used) && is_present(dev)) usb_kill_urb(urb); usb_free_urb(urb); } @@ -689,18 +688,14 @@ static int v4l_stk_release(struct inode *inode, struct file *fp) { struct stk_camera *dev = fp->private_data; - if (dev->owner != fp) { - usb_autopm_put_interface(dev->interface); - return 0; + if (dev->owner == fp) { + stk_stop_stream(dev); + stk_free_buffers(dev); + dev->owner = NULL; } - stk_stop_stream(dev); - - stk_free_buffers(dev); - - dev->owner = NULL; - - usb_autopm_put_interface(dev->interface); + if(is_present(dev)) + usb_autopm_put_interface(dev->interface); return 0; } @@ -714,9 +709,6 @@ static ssize_t v4l_stk_read(struct file *fp, char __user *buf, struct stk_sio_buffer *sbuf; struct stk_camera *dev = fp->private_data; - if (dev == NULL) - return -EIO; - if (!is_present(dev)) return -EIO; if (dev->owner && dev->owner != fp) @@ -773,9 +765,6 @@ static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait) { struct stk_camera *dev = fp->private_data; - if (dev == NULL) - return -ENODEV; - poll_wait(fp, &dev->wait_frame, wait); if (!is_present(dev)) @@ -1436,7 +1425,7 @@ static void stk_camera_disconnect(struct usb_interface *interface) wake_up_interruptible(&dev->wait_frame); stk_remove_sysfs_files(&dev->vdev); - STK_INFO("Syntek USB2.0 Camera release resources" + STK_INFO("Syntek USB2.0 Camera release resources " "video device /dev/video%d\n", dev->vdev.minor); video_unregister_device(&dev->vdev); |