macintosh/media bay: 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>

1 files changed, 14 insertions, 13 deletions

diff --git a/drivers/macintosh/mediabay.c b/drivers/macintosh/mediabay.c
index 818aba368541..b1e5b4705250 100644
--- a/drivers/macintosh/mediabay.c
+++ b/drivers/macintosh/mediabay.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/ide.h>
 #include <linux/kthread.h>
+#include <linux/mutex.h>
 #include <asm/prom.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
@@ -77,7 +78,7 @@ struct media_bay_info {
         int                             index;
         int                             cached_gpio;
         int                             sleeping;
-        struct semaphore                lock;
+        struct mutex                    lock;
 #ifdef CONFIG_BLK_DEV_IDE_PMAC
         ide_hwif_t                      *cd_port;
         void __iomem                    *cd_base;
@@ -459,27 +460,27 @@ int media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base,
                 if (bay->mdev && which_bay == bay->mdev->ofdev.node) {
                         int timeout = 5000, index = hwif->index;
                         
-                        down(&bay->lock);
+                        mutex_lock(&bay->lock);
 
                         bay->cd_port    = hwif;
                         bay->cd_base    = (void __iomem *) base;
                         bay->cd_irq     = irq;
 
                         if ((MB_CD != bay->content_id) || bay->state != mb_up) {
-                                up(&bay->lock);
+                                mutex_unlock(&bay->lock);
                                 return 0;
                         }
                         printk(KERN_DEBUG "Registered ide%d for media bay %d\n", index, i);
                         do {
                                 if (MB_IDE_READY(i)) {
                                         bay->cd_index   = index;
-                                        up(&bay->lock);
+                                        mutex_unlock(&bay->lock);
                                         return 0;
                                 }
                                 mdelay(1);
                         } while(--timeout);
                         printk(KERN_DEBUG "Timeount waiting IDE in bay %d\n", i);
-                        up(&bay->lock);
+                        mutex_unlock(&bay->lock);
                         return -ENODEV;
                 }
         }
@@ -617,10 +618,10 @@ static int media_bay_task(void *x)
 
         while (!kthread_should_stop()) {
                 for (i = 0; i < media_bay_count; ++i) {
-                        down(&media_bays[i].lock);
+                        mutex_lock(&media_bays[i].lock);
                         if (!media_bays[i].sleeping)
                                 media_bay_step(i);
-                        up(&media_bays[i].lock);
+                        mutex_unlock(&media_bays[i].lock);
                 }
 
                 msleep_interruptible(MB_POLL_DELAY);
@@ -660,7 +661,7 @@ static int __devinit media_bay_attach(struct macio_dev *mdev, const struct of_de
         bay->index = i;
         bay->ops = match->data;
         bay->sleeping = 0;
-        init_MUTEX(&bay->lock);
+        mutex_init(&bay->lock);
 
         /* Init HW probing */
         if (bay->ops->init)
@@ -698,10 +699,10 @@ static int media_bay_suspend(struct macio_dev *mdev, pm_message_t state)
 
         if (state.event != mdev->ofdev.dev.power.power_state.event
             && (state.event & PM_EVENT_SLEEP)) {
-                down(&bay->lock);
+                mutex_lock(&bay->lock);
                 bay->sleeping = 1;
                 set_mb_power(bay, 0);
-                up(&bay->lock);
+                mutex_unlock(&bay->lock);
                 msleep(MB_POLL_DELAY);
                 mdev->ofdev.dev.power.power_state = state;
         }
@@ -720,12 +721,12 @@ static int media_bay_resume(struct macio_dev *mdev)
                    they seem to help the 3400 get it right.
                  */
                 /* Force MB power to 0 */
-                down(&bay->lock);
+                mutex_lock(&bay->lock);
                 set_mb_power(bay, 0);
                 msleep(MB_POWER_DELAY);
                 if (bay->ops->content(bay) != bay->content_id) {
                         printk("mediabay%d: content changed during sleep...\n", bay->index);
-                        up(&bay->lock);
+                        mutex_unlock(&bay->lock);
                         return 0;
                 }
                 set_mb_power(bay, 1);
@@ -741,7 +742,7 @@ static int media_bay_resume(struct macio_dev *mdev)
                 } while((bay->state != mb_empty) &&
                         (bay->state != mb_up));
                 bay->sleeping = 0;
-                up(&bay->lock);
+                mutex_unlock(&bay->lock);
         }
         return 0;
 }