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USB: mark "reject" field of struct urb as atomic_t

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It is enough to protect accesses to reject field of urb
by marking it as atomic_t,also it is the only reason of
existence of usb_reject_lock,so remove the lock to make
code more clean.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Acked-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ming Lei 2008-12-12 21:38:45 +08:00 • committed by Greg Kroah-Hartman
parent 3b23dd6f8a
commit 49367d8f1d
3 changed files with 9 additions and 22 deletions
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2
include/linux/usb.h
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@ -1340,7 +1340,7 @@ struct urb {
struct kref kref; /* reference count of the URB */
void *hcpriv; /* private data for host controller */
atomic_t use_count; /* concurrent submissions counter */
u8 reject; /* submissions will fail */
atomic_t reject; /* submissions will fail */
int unlinked; /* unlink error code */
/* public: documented fields in the urb that can be used by drivers */