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macintosh/media bay: Convert semaphore to mutex

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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>
This commit is contained in:
Daniel Walker 2008-06-10 09:26:09 +10:00 committed by Paul Mackerras
parent 1baaeea005
commit 9a24729d8a
1 changed files with 14 additions and 13 deletions
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27
drivers/macintosh/mediabay.c
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@ -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;
}