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authorChristian Lamparter <chunkeey@googlemail.com>2009-10-17 21:56:51 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-10-27 16:48:34 -0400
commit731d6bfc2d201958cfa3d08c7acff218497bbd50 (patch)
tree447fbafa00626e9a8be8d56d5a1c739c0e488b48 /drivers/net/wireless/ath/ar9170
parent02bdf5b48a2cd90a5d036eab68e6f65adb200140 (diff)
ar9170usb: atomic pending urbs counter
This patch follows "ar9170: atomic pending A-MPDU counter" idea and converts another critical counter to atomic_*. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ar9170')
-rw-r--r--drivers/net/wireless/ath/ar9170/usb.c12
-rw-r--r--drivers/net/wireless/ath/ar9170/usb.h2
2 files changed, 7 insertions, 7 deletions
diff --git a/drivers/net/wireless/ath/ar9170/usb.c b/drivers/net/wireless/ath/ar9170/usb.c
index e974e5829e1..6bdcdf6d1cc 100644
--- a/drivers/net/wireless/ath/ar9170/usb.c
+++ b/drivers/net/wireless/ath/ar9170/usb.c
@@ -108,15 +108,15 @@ static void ar9170_usb_submit_urb(struct ar9170_usb *aru)
return ;
spin_lock_irqsave(&aru->tx_urb_lock, flags);
- if (aru->tx_submitted_urbs >= AR9170_NUM_TX_URBS) {
+ if (atomic_read(&aru->tx_submitted_urbs) >= AR9170_NUM_TX_URBS) {
spin_unlock_irqrestore(&aru->tx_urb_lock, flags);
return ;
}
- aru->tx_submitted_urbs++;
+ atomic_inc(&aru->tx_submitted_urbs);
urb = usb_get_from_anchor(&aru->tx_pending);
if (!urb) {
- aru->tx_submitted_urbs--;
+ atomic_dec(&aru->tx_submitted_urbs);
spin_unlock_irqrestore(&aru->tx_urb_lock, flags);
return ;
@@ -133,7 +133,7 @@ static void ar9170_usb_submit_urb(struct ar9170_usb *aru)
err);
usb_unanchor_urb(urb);
- aru->tx_submitted_urbs--;
+ atomic_dec(&aru->tx_submitted_urbs);
ar9170_tx_callback(&aru->common, urb->context);
}
@@ -151,7 +151,7 @@ static void ar9170_usb_tx_urb_complete_frame(struct urb *urb)
return ;
}
- aru->tx_submitted_urbs--;
+ atomic_dec(&aru->tx_submitted_urbs);
ar9170_tx_callback(&aru->common, skb);
@@ -794,7 +794,7 @@ static int ar9170_usb_probe(struct usb_interface *intf,
spin_lock_init(&aru->tx_urb_lock);
aru->tx_pending_urbs = 0;
- aru->tx_submitted_urbs = 0;
+ atomic_set(&aru->tx_submitted_urbs, 0);
aru->common.stop = ar9170_usb_stop;
aru->common.flush = ar9170_usb_flush;
diff --git a/drivers/net/wireless/ath/ar9170/usb.h b/drivers/net/wireless/ath/ar9170/usb.h
index d098f4d5d2f..a2ce3b169ce 100644
--- a/drivers/net/wireless/ath/ar9170/usb.h
+++ b/drivers/net/wireless/ath/ar9170/usb.h
@@ -67,7 +67,7 @@ struct ar9170_usb {
bool req_one_stage_fw;
spinlock_t tx_urb_lock;
- unsigned int tx_submitted_urbs;
+ atomic_t tx_submitted_urbs;
unsigned int tx_pending_urbs;
struct completion cmd_wait;