block: autoconvert trivial BKL users to private mutex

[net-next-2.6.git] / drivers / block / swim.c

diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index e463657569ff06e3039822a62ca888624160eca2..75333d0a3327de785f520cdeddbb4a45b83f1a90 100644 (file)
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -20,6 +20,7 @@
 #include <linux/fd.h>
 #include <linux/slab.h>
 #include <linux/blkdev.h>
+#include <linux/mutex.h>
 #include <linux/hdreg.h>
 #include <linux/kernel.h>
 #include <linux/delay.h>
@@ -221,6 +222,7 @@ extern int swim_read_sector_header(struct swim __iomem *base,
 extern int swim_read_sector_data(struct swim __iomem *base,
                                 unsigned char *data);
 
+static DEFINE_MUTEX(swim_mutex);
 static inline void set_swim_mode(struct swim __iomem *base, int enable)
 {
        struct iwm __iomem *iwm_base;
@@ -661,11 +663,23 @@ out:
        return err;
 }
 
+static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+       int ret;
+
+       mutex_lock(&swim_mutex);
+       ret = floppy_open(bdev, mode);
+       mutex_unlock(&swim_mutex);
+
+       return ret;
+}
+
 static int floppy_release(struct gendisk *disk, fmode_t mode)
 {
        struct floppy_state *fs = disk->private_data;
        struct swim __iomem *base = fs->swd->base;
 
+       mutex_lock(&swim_mutex);
        if (fs->ref_count < 0)
                fs->ref_count = 0;
        else if (fs->ref_count > 0)
@@ -673,6 +687,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
 
        if (fs->ref_count == 0)
                swim_motor(base, OFF);
+       mutex_unlock(&swim_mutex);
 
        return 0;
 }
@@ -690,7 +705,9 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
        case FDEJECT:
                if (fs->ref_count != 1)
                        return -EBUSY;
+               mutex_lock(&swim_mutex);
                err = floppy_eject(fs);
+               mutex_unlock(&swim_mutex);
                return err;
 
        case FDGETPRM:
@@ -751,9 +768,9 @@ static int floppy_revalidate(struct gendisk *disk)
 
 static const struct block_device_operations floppy_fops = {
        .owner           = THIS_MODULE,
-       .open            = floppy_open,
+       .open            = floppy_unlocked_open,
        .release         = floppy_release,
-       .locked_ioctl    = floppy_ioctl,
+       .ioctl           = floppy_ioctl,
        .getgeo          = floppy_getgeo,
        .media_changed   = floppy_check_change,
        .revalidate_disk = floppy_revalidate,