Commit b1c82b5c authored by Jes Sorensen's avatar Jes Sorensen Committed by Linus Torvalds
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[PATCH] sem2mutex: drivers/block/floppy.c



Convert from semaphore to mutex.
Untested as I have no access to a floppy drive at the moment.
Signed-off-by: default avatarJes Sorensen <jes@sgi.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 1657f824
......@@ -179,6 +179,7 @@ static int print_unex = 1;
#include <linux/devfs_fs_kernel.h>
#include <linux/platform_device.h>
#include <linux/buffer_head.h> /* for invalidate_buffers() */
#include <linux/mutex.h>
/*
* PS/2 floppies have much slower step rates than regular floppies.
......@@ -413,7 +414,7 @@ static struct floppy_write_errors write_errors[N_DRIVE];
static struct timer_list motor_off_timer[N_DRIVE];
static struct gendisk *disks[N_DRIVE];
static struct block_device *opened_bdev[N_DRIVE];
static DECLARE_MUTEX(open_lock);
static DEFINE_MUTEX(open_lock);
static struct floppy_raw_cmd *raw_cmd, default_raw_cmd;
/*
......@@ -3333,7 +3334,7 @@ static inline int set_geometry(unsigned int cmd, struct floppy_struct *g,
if (type) {
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
down(&open_lock);
mutex_lock(&open_lock);
LOCK_FDC(drive, 1);
floppy_type[type] = *g;
floppy_type[type].name = "user format";
......@@ -3347,7 +3348,7 @@ static inline int set_geometry(unsigned int cmd, struct floppy_struct *g,
continue;
__invalidate_device(bdev);
}
up(&open_lock);
mutex_unlock(&open_lock);
} else {
int oldStretch;
LOCK_FDC(drive, 1);
......@@ -3674,7 +3675,7 @@ static int floppy_release(struct inode *inode, struct file *filp)
{
int drive = (long)inode->i_bdev->bd_disk->private_data;
down(&open_lock);
mutex_lock(&open_lock);
if (UDRS->fd_ref < 0)
UDRS->fd_ref = 0;
else if (!UDRS->fd_ref--) {
......@@ -3684,7 +3685,7 @@ static int floppy_release(struct inode *inode, struct file *filp)
if (!UDRS->fd_ref)
opened_bdev[drive] = NULL;
floppy_release_irq_and_dma();
up(&open_lock);
mutex_unlock(&open_lock);
return 0;
}
......@@ -3702,7 +3703,7 @@ static int floppy_open(struct inode *inode, struct file *filp)
char *tmp;
filp->private_data = (void *)0;
down(&open_lock);
mutex_lock(&open_lock);
old_dev = UDRS->fd_device;
if (opened_bdev[drive] && opened_bdev[drive] != inode->i_bdev)
goto out2;
......@@ -3785,7 +3786,7 @@ static int floppy_open(struct inode *inode, struct file *filp)
if ((filp->f_mode & 2) && !(UTESTF(FD_DISK_WRITABLE)))
goto out;
}
up(&open_lock);
mutex_unlock(&open_lock);
return 0;
out:
if (UDRS->fd_ref < 0)
......@@ -3796,7 +3797,7 @@ out:
opened_bdev[drive] = NULL;
floppy_release_irq_and_dma();
out2:
up(&open_lock);
mutex_unlock(&open_lock);
return res;
}
......
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