Merge commit 'upstream/master'
[pandora-kernel.git] / drivers / ide / ide-floppy.c
index cbf84f2..ca11a26 100644 (file)
@@ -125,26 +125,10 @@ typedef struct ide_floppy_obj {
        int wp;
        /* Supports format progress report */
        int srfp;
-       /* Status/Action flags */
-       unsigned long flags;
 } idefloppy_floppy_t;
 
 #define IDEFLOPPY_TICKS_DELAY  HZ/20   /* default delay for ZIP 100 (50ms) */
 
-/* Floppy flag bits values. */
-enum {
-       /* DRQ interrupt device */
-       IDEFLOPPY_FLAG_DRQ_INTERRUPT            = (1 << 0),
-       /* Media may have changed */
-       IDEFLOPPY_FLAG_MEDIA_CHANGED            = (1 << 1),
-       /* Format in progress */
-       IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS       = (1 << 2),
-       /* Avoid commands not supported in Clik drive */
-       IDEFLOPPY_FLAG_CLIK_DRIVE               = (1 << 3),
-       /* Requires BH algorithm for packets */
-       IDEFLOPPY_FLAG_ZIP_DRIVE                = (1 << 4),
-};
-
 /* Defines for the MODE SENSE command */
 #define MODE_SENSE_CURRENT             0x00
 #define MODE_SENSE_CHANGEABLE          0x01
@@ -174,23 +158,29 @@ static DEFINE_MUTEX(idefloppy_ref_mutex);
 #define ide_floppy_g(disk) \
        container_of((disk)->private_data, struct ide_floppy_obj, driver)
 
+static void idefloppy_cleanup_obj(struct kref *);
+
 static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk)
 {
        struct ide_floppy_obj *floppy = NULL;
 
        mutex_lock(&idefloppy_ref_mutex);
        floppy = ide_floppy_g(disk);
-       if (floppy)
+       if (floppy) {
                kref_get(&floppy->kref);
+               if (ide_device_get(floppy->drive)) {
+                       kref_put(&floppy->kref, idefloppy_cleanup_obj);
+                       floppy = NULL;
+               }
+       }
        mutex_unlock(&idefloppy_ref_mutex);
        return floppy;
 }
 
-static void idefloppy_cleanup_obj(struct kref *);
-
 static void ide_floppy_put(struct ide_floppy_obj *floppy)
 {
        mutex_lock(&idefloppy_ref_mutex);
+       ide_device_put(floppy->drive);
        kref_put(&floppy->kref, idefloppy_cleanup_obj);
        mutex_unlock(&idefloppy_ref_mutex);
 }
@@ -429,7 +419,7 @@ static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive)
         * 40 and 50msec work well. idefloppy_pc_intr will not be actually
         * used until after the packet is moved in about 50 msec.
         */
-       if (pc->flags & PC_FLAG_ZIP_DRIVE) {
+       if (drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) {
                timeout = floppy->ticks;
                expiry = &idefloppy_transfer_pc;
        } else {
@@ -649,12 +639,6 @@ static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
                return ide_stopped;
        }
 
-       if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT)
-               pc->flags |= PC_FLAG_DRQ_INTERRUPT;
-
-       if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE)
-               pc->flags |= PC_FLAG_ZIP_DRIVE;
-
        pc->rq = rq;
 
        return idefloppy_issue_pc(drive, pc);
@@ -798,7 +782,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
                switch (pc.buf[desc_start + 4] & 0x03) {
                /* Clik! drive returns this instead of CAPACITY_CURRENT */
                case CAPACITY_UNFORMATTED:
-                       if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
+                       if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
                                /*
                                 * If it is not a clik drive, break out
                                 * (maintains previous driver behaviour)
@@ -844,7 +828,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
        }
 
        /* Clik! disk does not support get_flexible_disk_page */
-       if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE))
+       if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
                (void) ide_floppy_get_flexible_disk_page(drive);
 
        set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
@@ -1046,7 +1030,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
        drive->pc_callback = ide_floppy_callback;
 
        if (((gcw[0] & 0x60) >> 5) == 1)
-               floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT;
+               drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
        /*
         * We used to check revisions here. At this point however I'm giving up.
         * Just assume they are all broken, its easier.
@@ -1057,7 +1041,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
         * we'll leave the limitation below for the 2.2.x tree.
         */
        if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
-               floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE;
+               drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
                /* This value will be visible in the /proc/ide/hdx/settings */
                floppy->ticks = IDEFLOPPY_TICKS_DELAY;
                blk_queue_max_sectors(drive->queue, 64);
@@ -1069,7 +1053,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
         */
        if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
                blk_queue_max_sectors(drive->queue, 64);
-               floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE;
+               drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
        }
 
        (void) ide_floppy_get_capacity(drive);
@@ -1158,7 +1142,7 @@ static int idefloppy_open(struct inode *inode, struct file *filp)
        floppy->openers++;
 
        if (floppy->openers == 1) {
-               floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+               drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
                /* Just in case */
 
                idefloppy_init_pc(&pc);
@@ -1185,14 +1169,14 @@ static int idefloppy_open(struct inode *inode, struct file *filp)
                        ret = -EROFS;
                        goto out_put_floppy;
                }
-               floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED;
+               drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
                /* IOMEGA Clik! drives do not support lock/unlock commands */
-               if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
+               if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
                        idefloppy_create_prevent_cmd(&pc, 1);
                        (void) idefloppy_queue_pc_tail(drive, &pc);
                }
                check_disk_change(inode->i_bdev);
-       } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) {
+       } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) {
                ret = -EBUSY;
                goto out_put_floppy;
        }
@@ -1215,12 +1199,12 @@ static int idefloppy_release(struct inode *inode, struct file *filp)
 
        if (floppy->openers == 1) {
                /* IOMEGA Clik! drives do not support lock/unlock commands */
-               if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
+               if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
                        idefloppy_create_prevent_cmd(&pc, 0);
                        (void) idefloppy_queue_pc_tail(drive, &pc);
                }
 
-               floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+               drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
        }
 
        floppy->openers--;
@@ -1241,15 +1225,17 @@ static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
        return 0;
 }
 
-static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy,
-               struct ide_atapi_pc *pc, unsigned long arg, unsigned int cmd)
+static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc,
+                              unsigned long arg, unsigned int cmd)
 {
+       idefloppy_floppy_t *floppy = drive->driver_data;
+
        if (floppy->openers > 1)
                return -EBUSY;
 
        /* The IOMEGA Clik! Drive doesn't support this command -
         * no room for an eject mechanism */
-       if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) {
+       if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
                int prevent = arg ? 1 : 0;
 
                if (cmd == CDROMEJECT)
@@ -1270,16 +1256,17 @@ static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy,
 static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
                                  int __user *arg)
 {
-       int blocks, length, flags, err = 0;
        struct ide_atapi_pc pc;
+       ide_drive_t *drive = floppy->drive;
+       int blocks, length, flags, err = 0;
 
        if (floppy->openers > 1) {
                /* Don't format if someone is using the disk */
-               floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+               drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
                return -EBUSY;
        }
 
-       floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+       drive->atapi_flags |= IDE_AFLAG_FORMAT_IN_PROGRESS;
 
        /*
         * Send ATAPI_FORMAT_UNIT to the drive.
@@ -1303,15 +1290,15 @@ static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
                goto out;
        }
 
-       (void) idefloppy_get_sfrp_bit(floppy->drive);
+       (void) idefloppy_get_sfrp_bit(drive);
        idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
 
-       if (idefloppy_queue_pc_tail(floppy->drive, &pc))
+       if (idefloppy_queue_pc_tail(drive, &pc))
                err = -EIO;
 
 out:
        if (err)
-               floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS;
+               drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
        return err;
 }
 
@@ -1330,7 +1317,7 @@ static int idefloppy_ioctl(struct inode *inode, struct file *file,
        case CDROMEJECT:
                /* fall through */
        case CDROM_LOCKDOOR:
-               return ide_floppy_lockdoor(floppy, &pc, arg, cmd);
+               return ide_floppy_lockdoor(drive, &pc, arg, cmd);
        case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
                return 0;
        case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
@@ -1371,8 +1358,8 @@ static int idefloppy_media_changed(struct gendisk *disk)
                drive->attach = 0;
                return 0;
        }
-       ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED);
-       floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED;
+       ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED);
+       drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED;
        return ret;
 }