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Date: Wed, 23 May 2007 14:35:48 -0700
From: akpm@...ux-foundation.org
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, akpm@...ux-foundation.org,
matthias.kaehlcke@...il.com, chas@....nrl.navy.mil
Subject: [patch 1/8] use mutex instead of binary semaphore in idt77252 driver
From: Matthias Kaehlcke <matthias.kaehlcke@...il.com>
Use mutex instead of binary semaphore in idt77252 driver.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@...il.com>
Cc: chas williams <chas@....nrl.navy.mil>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---
drivers/atm/idt77252.c | 27 ++++++++++++++-------------
drivers/atm/idt77252.h | 4 ++--
2 files changed, 16 insertions(+), 15 deletions(-)
diff -puN drivers/atm/idt77252.c~use-mutex-instead-of-binary-semaphore-in-idt77252-driver drivers/atm/idt77252.c
--- a/drivers/atm/idt77252.c~use-mutex-instead-of-binary-semaphore-in-idt77252-driver
+++ a/drivers/atm/idt77252.c
@@ -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 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,
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
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);
diff -puN drivers/atm/idt77252.h~use-mutex-instead-of-binary-semaphore-in-idt77252-driver drivers/atm/idt77252.h
--- a/drivers/atm/idt77252.h~use-mutex-instead-of-binary-semaphore-in-idt77252-driver
+++ a/drivers/atm/idt77252.h
@@ -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;
_
-
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