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authorDaniel Walker <dwalker@mvista.com>2008-06-10 09:26:08 +1000
committerPaul Mackerras <paulus@samba.org>2008-06-30 22:30:46 +1000
commit1baaeea00594776978d875a0f618591056a3705a (patch)
treee311d43ea86c2181ca5039d33c8f9d0ea4ab0ec4
parentb1e2270ffefb636afd71bbb8bf19aedff0e5ac3d (diff)
macintosh/therm_windtunnel: Convert semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--drivers/macintosh/therm_windtunnel.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c
index 6d9e7ac7122..3da0a02efd7 100644
--- a/drivers/macintosh/therm_windtunnel.c
+++ b/drivers/macintosh/therm_windtunnel.c
@@ -62,7 +62,7 @@ static struct {
volatile int running;
struct task_struct *poll_task;
- struct semaphore lock;
+ struct mutex lock;
struct of_device *of_dev;
struct i2c_client *thermostat;
@@ -286,23 +286,23 @@ restore_regs( void )
static int control_loop(void *dummy)
{
- down(&x.lock);
+ mutex_lock(&x.lock);
setup_hardware();
- up(&x.lock);
+ mutex_unlock(&x.lock);
for (;;) {
msleep_interruptible(8000);
if (kthread_should_stop())
break;
- down(&x.lock);
+ mutex_lock(&x.lock);
poll_temp();
- up(&x.lock);
+ mutex_unlock(&x.lock);
}
- down(&x.lock);
+ mutex_lock(&x.lock);
restore_regs();
- up(&x.lock);
+ mutex_unlock(&x.lock);
return 0;
}
@@ -489,7 +489,7 @@ g4fan_init( void )
const struct apple_thermal_info *info;
struct device_node *np;
- init_MUTEX( &x.lock );
+ mutex_init(&x.lock);
if( !(np=of_find_node_by_name(NULL, "power-mgt")) )
return -ENODEV;