Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw

[powerpc.git] / drivers / ide / ide-floppy.c

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index e3a2676..57cd21c 100644 (file)
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -279,6 +279,7 @@ typedef struct ide_floppy_obj {
        ide_driver_t    *driver;
        struct gendisk  *disk;
        struct kref     kref;
+       unsigned int    openers;        /* protected by BKL for now */
 
        /* Current packet command */
        idefloppy_pc_t *pc;
@@ -866,7 +867,7 @@ static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
        if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
                printk(KERN_ERR "ide-floppy: The floppy wants to issue "
                        "more interrupts in DMA mode\n");
-               (void)__ide_dma_off(drive);
+               ide_dma_off(drive);
                return ide_do_reset(drive);
        }
 
@@ -1096,9 +1097,9 @@ static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *p
        pc->current_position = pc->buffer;
        bcount.all = min(pc->request_transfer, 63 * 1024);
 
-       if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) {
-               (void)__ide_dma_off(drive);
-       }
+       if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags))
+               ide_dma_off(drive);
+
        feature.all = 0;
 
        if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
@@ -1433,7 +1434,8 @@ static int idefloppy_get_capacity (ide_drive_t *drive)
        
        drive->bios_cyl = 0;
        drive->bios_head = drive->bios_sect = 0;
-       floppy->blocks = floppy->bs_factor = 0;
+       floppy->blocks = 0;
+       floppy->bs_factor = 1;
        set_capacity(floppy->disk, 0);
 
        idefloppy_create_read_capacity_cmd(&pc);
@@ -1949,9 +1951,9 @@ static int idefloppy_open(struct inode *inode, struct file *filp)
 
        drive = floppy->drive;
 
-       drive->usage++;
+       floppy->openers++;
 
-       if (drive->usage == 1) {
+       if (floppy->openers == 1) {
                clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
                /* Just in case */
 
@@ -1969,13 +1971,11 @@ static int idefloppy_open(struct inode *inode, struct file *filp)
                    ** capacity of the drive or begin the format - Sam
                    */
                    ) {
-                       drive->usage--;
                        ret = -EIO;
                        goto out_put_floppy;
                }
 
                if (floppy->wp && (filp->f_mode & 2)) {
-                       drive->usage--;
                        ret = -EROFS;
                        goto out_put_floppy;
                }
@@ -1987,13 +1987,13 @@ static int idefloppy_open(struct inode *inode, struct file *filp)
                }
                check_disk_change(inode->i_bdev);
        } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) {
-               drive->usage--;
                ret = -EBUSY;
                goto out_put_floppy;
        }
        return 0;
 
 out_put_floppy:
+       floppy->openers--;
        ide_floppy_put(floppy);
        return ret;
 }
@@ -2007,7 +2007,7 @@ static int idefloppy_release(struct inode *inode, struct file *filp)
        
        debug_log(KERN_INFO "Reached idefloppy_release\n");
 
-       if (drive->usage == 1) {
+       if (floppy->openers == 1) {
                /* IOMEGA Clik! drives do not support lock/unlock commands */
                 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
                        idefloppy_create_prevent_cmd(&pc, 0);
@@ -2016,7 +2016,8 @@ static int idefloppy_release(struct inode *inode, struct file *filp)
 
                clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
        }
-       drive->usage--;
+
+       floppy->openers--;
 
        ide_floppy_put(floppy);
 
@@ -2050,7 +2051,7 @@ static int idefloppy_ioctl(struct inode *inode, struct file *file,
                prevent = 0;
                /* fall through */
        case CDROM_LOCKDOOR:
-               if (drive->usage > 1)
+               if (floppy->openers > 1)
                        return -EBUSY;
 
                /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */
@@ -2072,7 +2073,7 @@ static int idefloppy_ioctl(struct inode *inode, struct file *file,
                if (!(file->f_mode & 2))
                        return -EPERM;
 
-               if (drive->usage > 1) {
+               if (floppy->openers > 1) {
                        /* Don't format if someone is using the disk */
 
                        clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
@@ -2147,7 +2148,7 @@ static int ide_floppy_probe(ide_drive_t *drive)
                printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name);
                goto failed;
        }
-       if ((floppy = (idefloppy_floppy_t *) kzalloc (sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) {
+       if ((floppy = kzalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) {
                printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name);
                goto failed;
        }