[ATM]: Use mutex instead of binary semaphore in idt77252 driver.
Matthias Kaehlcke [Wed, 23 May 2007 21:45:45 +0000 (14:45 -0700)]
Use mutex instead of binary semaphore in idt77252 driver.

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>

drivers/atm/idt77252.c
drivers/atm/idt77252.h

index 057efbc..3800bc0 100644 (file)
@@ -47,7 +47,8 @@ static char const rcsid[] =
 #include <linux/bitops.h>
 #include <linux/wait.h>
 #include <linux/jiffies.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
+
 #include <asm/io.h>
 #include <asm/uaccess.h>
 #include <asm/atomic.h>
@@ -2435,7 +2436,7 @@ idt77252_open(struct atm_vcc *vcc)
 
        set_bit(ATM_VF_ADDR, &vcc->flags);
 
-       down(&card->mutex);
+       mutex_lock(&card->mutex);
 
        OPRINTK("%s: opening vpi.vci: %d.%d\n", card->name, vpi, vci);
 
@@ -2446,7 +2447,7 @@ idt77252_open(struct atm_vcc *vcc)
                break;
        default:
                printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal);
-               up(&card->mutex);
+               mutex_unlock(&card->mutex);
                return -EPROTONOSUPPORT;
        }
 
@@ -2455,7 +2456,7 @@ idt77252_open(struct atm_vcc *vcc)
                card->vcs[index] = kzalloc(sizeof(struct vc_map), GFP_KERNEL);
                if (!card->vcs[index]) {
                        printk("%s: can't alloc vc in open()\n", card->name);
-                       up(&card->mutex);
+                       mutex_unlock(&card->mutex);
                        return -ENOMEM;
                }
                card->vcs[index]->card = card;
@@ -2484,14 +2485,14 @@ idt77252_open(struct atm_vcc *vcc)
        if (inuse) {
                printk("%s: %s vci already in use.\n", card->name,
                       inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx");
-               up(&card->mutex);
+               mutex_unlock(&card->mutex);
                return -EADDRINUSE;
        }
 
        if (vcc->qos.txtp.traffic_class != ATM_NONE) {
                error = idt77252_init_tx(card, vc, vcc, &vcc->qos);
                if (error) {
-                       up(&card->mutex);
+                       mutex_unlock(&card->mutex);
                        return error;
                }
        }
@@ -2499,14 +2500,14 @@ idt77252_open(struct atm_vcc *vcc)
        if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
                error = idt77252_init_rx(card, vc, vcc, &vcc->qos);
                if (error) {
-                       up(&card->mutex);
+                       mutex_unlock(&card->mutex);
                        return error;
                }
        }
 
        set_bit(ATM_VF_READY, &vcc->flags);
 
-       up(&card->mutex);
+       mutex_unlock(&card->mutex);
        return 0;
 }
 
@@ -2520,7 +2521,7 @@ idt77252_close(struct atm_vcc *vcc)
        unsigned long addr;
        unsigned long timeout;
 
-       down(&card->mutex);
+       mutex_lock(&card->mutex);
 
        IPRINTK("%s: idt77252_close: vc = %d (%d.%d)\n",
                card->name, vc->index, vcc->vpi, vcc->vci);
@@ -2591,7 +2592,7 @@ done:
                free_scq(card, vc->scq);
        }
 
-       up(&card->mutex);
+       mutex_unlock(&card->mutex);
 }
 
 static int
@@ -2602,7 +2603,7 @@ idt77252_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
        struct vc_map *vc = vcc->dev_data;
        int error = 0;
 
-       down(&card->mutex);
+       mutex_lock(&card->mutex);
 
        if (qos->txtp.traffic_class != ATM_NONE) {
                if (!test_bit(VCF_TX, &vc->flags)) {
@@ -2648,7 +2649,7 @@ idt77252_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
        set_bit(ATM_VF_HASQOS, &vcc->flags);
 
 out:
-       up(&card->mutex);
+       mutex_unlock(&card->mutex);
        return error;
 }
 
@@ -3709,7 +3710,7 @@ idt77252_init_one(struct pci_dev *pcidev, const struct pci_device_id *id)
        membase = pci_resource_start(pcidev, 1);
        srambase = pci_resource_start(pcidev, 2);
 
-       init_MUTEX(&card->mutex);
+       mutex_init(&card->mutex);
        spin_lock_init(&card->cmd_lock);
        spin_lock_init(&card->tst_lock);
 
index 544b397..6f2b4a5 100644 (file)
@@ -37,7 +37,7 @@
 #include <linux/ptrace.h>
 #include <linux/skbuff.h>
 #include <linux/workqueue.h>
-
+#include <linux/mutex.h>
 
 /*****************************************************************************/
 /*                                                                           */
@@ -359,7 +359,7 @@ struct idt77252_dev
        unsigned long           srambase;       /* SAR's sram  base address */
        void __iomem            *fbq[4];        /* FBQ fill addresses */
 
-       struct semaphore        mutex;
+       struct mutex            mutex;
        spinlock_t              cmd_lock;       /* for r/w utility/sram */
 
        unsigned long           softstat;