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| author | Ming Lei <tom.leiming@gmail.com> | 2008-12-12 21:38:45 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-01-07 10:00:08 -0800 |
| commit | 49367d8f1d9f26482cf7089489e90f0afd0a942c (patch) | |
| tree | e0b8beb733f49772f258f90ce7af856a10fbdaac /drivers/usb/core/hcd.c | |
| parent | 3b23dd6f8a718e5339de4f7d86ce76a078b5f771 (diff) | |
| download | linux-49367d8f1d9f26482cf7089489e90f0afd0a942c.tar.gz linux-49367d8f1d9f26482cf7089489e90f0afd0a942c.tar.bz2 linux-49367d8f1d9f26482cf7089489e90f0afd0a942c.zip | |
USB: mark "reject" field of struct urb as atomic_t
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>
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index a0079876d74e..3c711db55d86 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1010,7 +1010,7 @@ int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb) spin_lock(&hcd_urb_list_lock); /* Check that the URB isn't being killed */ - if (unlikely(urb->reject)) { + if (unlikely(atomic_read(&urb->reject))) { rc = -EPERM; goto done; } @@ -1340,7 +1340,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags) INIT_LIST_HEAD(&urb->urb_list); atomic_dec(&urb->use_count); atomic_dec(&urb->dev->urbnum); - if (urb->reject) + if (atomic_read(&urb->reject)) wake_up(&usb_kill_urb_queue); usb_put_urb(urb); } @@ -1444,7 +1444,7 @@ void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status) urb->status = status; urb->complete (urb); atomic_dec (&urb->use_count); - if (unlikely (urb->reject)) + if (unlikely(atomic_read(&urb->reject))) wake_up (&usb_kill_urb_queue); usb_put_urb (urb); } |