From 731d6bfc2d201958cfa3d08c7acff218497bbd50 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 17 Oct 2009 21:56:51 +0200 Subject: [PATCH] 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 Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ar9170/usb.c | 12 ++++++------ drivers/net/wireless/ath/ar9170/usb.h | 2 +- 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 e974e5829e1a..6bdcdf6d1cc0 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 d098f4d5d2f2..a2ce3b169ceb 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; -- GitLab