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>

diff --git a/drivers/macintosh/mediabay.c b/drivers/macintosh/mediabay.c
index 818aba368541971deefe6f7fa06ee95af38e7aee..b1e5b4705250472a2819da9537fff2422e3ef967 100644 (file)
--- 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;
 }