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[media] pwc: Fix comment wrt lock ordering 

With all the changes to handle the locking in the v4l2-core rather then at
the driver level, the order in which the 2 pwc locks need to be taken has
changed, update the comment in the header file to correctly reflect this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans de Goede 2013-04-01 18:04:21 -03:00 committed by Mauro Carvalho Chehab
parent df90e22589
commit cd5de26288
1 changed files with 1 additions and 1 deletions
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2
drivers/media/usb/pwc/pwc.h
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@ -226,7 +226,7 @@ struct pwc_device
struct list_head queued_bufs; struct list_head queued_bufs;
spinlock_t queued_bufs_lock; /* Protects queued_bufs */ spinlock_t queued_bufs_lock; /* Protects queued_bufs */
/* Note if taking both locks v4l2_lock must always be locked first! */ /* If taking both locks vb_queue_lock must always be locked first! */
struct mutex v4l2_lock; /* Protects everything else */ struct mutex v4l2_lock; /* Protects everything else */
struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */