diff options
| author | Matthias Kaehlcke <matthias.kaehlcke@gmail.com> | 2007-04-26 10:41:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-04-26 10:41:49 +0200 |
| commit | bfbf3c0968498f5232c02965cf41695edae1bc4d (patch) | |
| tree | 670a7b942e05325b2461f31695bc62028c9e8adc /drivers | |
| parent | [BLUETOOTH] rfcomm_worker(): fix wakeup race (diff) | |
| download | linux-bfbf3c0968498f5232c02965cf41695edae1bc4d.tar.xz linux-bfbf3c0968498f5232c02965cf41695edae1bc4d.zip | |
[ATM]: Use mutex instead of binary semaphore in FORE Systems 200E-series driver
(akpm: remove CVS control string too)
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/atm/fore200e.c | 20 | ||||
| -rw-r--r-- | drivers/atm/fore200e.h | 2 |
2 files changed, 10 insertions, 12 deletions
diff --git a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c index a7c0ed3107e3..405ee5e09221 100644 --- a/drivers/atm/fore200e.c +++ b/drivers/atm/fore200e.c @@ -1,6 +1,4 @@ /* - $Id: fore200e.c,v 1.5 2000/04/14 10:10:34 davem Exp $ - A FORE Systems 200E-series driver for ATM on Linux. Christophe Lizzi (lizzi@cnam.fr), October 1999-March 2003. @@ -1502,9 +1500,9 @@ fore200e_open(struct atm_vcc *vcc) /* pseudo-CBR bandwidth requested? */ if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) { - down(&fore200e->rate_sf); + mutex_lock(&fore200e->rate_mtx); if (fore200e->available_cell_rate < vcc->qos.txtp.max_pcr) { - up(&fore200e->rate_sf); + mutex_unlock(&fore200e->rate_mtx); kfree(fore200e_vcc); vc_map->vcc = NULL; @@ -1513,7 +1511,7 @@ fore200e_open(struct atm_vcc *vcc) /* reserve bandwidth */ fore200e->available_cell_rate -= vcc->qos.txtp.max_pcr; - up(&fore200e->rate_sf); + mutex_unlock(&fore200e->rate_mtx); } vcc->itf = vcc->dev->number; @@ -1599,9 +1597,9 @@ fore200e_close(struct atm_vcc* vcc) /* release reserved bandwidth, if any */ if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) { - down(&fore200e->rate_sf); + mutex_lock(&fore200e->rate_mtx); fore200e->available_cell_rate += vcc->qos.txtp.max_pcr; - up(&fore200e->rate_sf); + mutex_unlock(&fore200e->rate_mtx); clear_bit(ATM_VF_HASQOS, &vcc->flags); } @@ -2064,16 +2062,16 @@ fore200e_change_qos(struct atm_vcc* vcc,struct atm_qos* qos, int flags) if ((qos->txtp.traffic_class == ATM_CBR) && (qos->txtp.max_pcr > 0)) { - down(&fore200e->rate_sf); + mutex_lock(&fore200e->rate_mtx); if (fore200e->available_cell_rate + vcc->qos.txtp.max_pcr < qos->txtp.max_pcr) { - up(&fore200e->rate_sf); + mutex_unlock(&fore200e->rate_mtx); return -EAGAIN; } fore200e->available_cell_rate += vcc->qos.txtp.max_pcr; fore200e->available_cell_rate -= qos->txtp.max_pcr; - up(&fore200e->rate_sf); + mutex_unlock(&fore200e->rate_mtx); memcpy(&vcc->qos, qos, sizeof(struct atm_qos)); @@ -2459,7 +2457,7 @@ fore200e_initialize(struct fore200e* fore200e) DPRINTK(2, "device %s being initialized\n", fore200e->name); - init_MUTEX(&fore200e->rate_sf); + mutex_init(&fore200e->rate_mtx); spin_lock_init(&fore200e->q_lock); cpq = fore200e->cp_queues = fore200e->virt_base + FORE200E_CP_QUEUES_OFFSET; diff --git a/drivers/atm/fore200e.h b/drivers/atm/fore200e.h index f9abfdac33e4..b85a54613dea 100644 --- a/drivers/atm/fore200e.h +++ b/drivers/atm/fore200e.h @@ -869,7 +869,7 @@ typedef struct fore200e { struct stats* stats; /* last snapshot of the stats */ - struct semaphore rate_sf; /* protects rate reservation ops */ + struct mutex rate_mtx; /* protects rate reservation ops */ spinlock_t q_lock; /* protects queue ops */ #ifdef FORE200E_USE_TASKLET struct tasklet_struct tx_tasklet; /* performs tx interrupt work */ |