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path: root/drivers/media/video/pwc/pwc.h
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Diffstat (limited to 'drivers/media/video/pwc/pwc.h')
-rw-r--r--drivers/media/video/pwc/pwc.h21
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/media/video/pwc/pwc.h b/drivers/media/video/pwc/pwc.h
index e4d4d711dd1f..d6b5b216b9d6 100644
--- a/drivers/media/video/pwc/pwc.h
+++ b/drivers/media/video/pwc/pwc.h
@@ -221,9 +221,17 @@ struct pwc_device
struct video_device vdev;
struct v4l2_device v4l2_dev;
- /* Pointer to our usb_device, may be NULL after unplug */
- struct usb_device *udev;
- struct mutex udevlock;
+ /* videobuf2 queue and queued buffers list */
+ struct vb2_queue vb_queue;
+ struct list_head queued_bufs;
+ spinlock_t queued_bufs_lock; /* Protects queued_bufs */
+
+ /* Note if taking both locks v4l2_lock must always be locked first! */
+ struct mutex v4l2_lock; /* Protects everything else */
+ struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
+
+ /* Pointer to our usb_device, will be NULL after unplug */
+ struct usb_device *udev; /* Both mutexes most be hold when setting! */
/* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
int type;
@@ -232,7 +240,6 @@ struct pwc_device
/*** Video data ***/
struct file *capt_file; /* file doing video capture */
- struct mutex capt_file_lock;
int vendpoint; /* video isoc endpoint */
int vcinterface; /* video control interface */
int valternate; /* alternate interface needed */
@@ -251,12 +258,6 @@ struct pwc_device
unsigned char *ctrl_buf;
struct urb *urbs[MAX_ISO_BUFS];
- char iso_init;
-
- /* videobuf2 queue and queued buffers list */
- struct vb2_queue vb_queue;
- struct list_head queued_bufs;
- spinlock_t queued_bufs_lock;
/*
* Frame currently being filled, this only gets touched by the