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[MMC+MFD] Convert mmc to mutexes

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convert mfd and mmc to mutexes

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Arjan van de Ven
2006-01-12 18:43:35 +00:00
committed by Russell King
parent 593195f9b2
commit a621aaed69
2 changed files with 20 additions and 18 deletions
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11
drivers/mmc/mmc_block.c
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@ -28,6 +28,7 @@
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/mutex.h>
#include <linux/mmc/card.h>
#include <linux/mmc/protocol.h>
@ -57,33 +58,33 @@ struct mmc_blk_data {
unsigned int read_only;
};
static DECLARE_MUTEX(open_lock);
static DEFINE_MUTEX(open_lock);
static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk)
{
struct mmc_blk_data *md;
down(&open_lock);
mutex_lock(&open_lock);
md = disk->private_data;
if (md && md->usage == 0)
md = NULL;
if (md)
md->usage++;
up(&open_lock);
mutex_unlock(&open_lock);
return md;
}
static void mmc_blk_put(struct mmc_blk_data *md)
{
down(&open_lock);
mutex_lock(&open_lock);
md->usage--;
if (md->usage == 0) {
put_disk(md->disk);
mmc_cleanup_queue(&md->queue);
kfree(md);
}
up(&open_lock);
mutex_unlock(&open_lock);
}
static int mmc_blk_open(struct inode *inode, struct file *filp)