[PATCH 5/8] hfs: stop using ioctl_by_bdev

[Christoph Hellwig]

Instead just call the CDROM layer functionality directly.

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 fs/hfs/mdb.c | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/fs/hfs/mdb.c b/fs/hfs/mdb.c
index 460281b1299eb..cdf0edeeb2781 100644
--- a/fs/hfs/mdb.c
+++ b/fs/hfs/mdb.c
@@ -32,29 +32,35 @@
 static int hfs_get_last_session(struct super_block *sb,
                                sector_t *start, sector_t *size)
 {
-       struct cdrom_multisession ms_info;
-       struct cdrom_tocentry te;
-       int res;
+       struct cdrom_device_info *cdi = disk_to_cdi(sb->s_bdev->bd_disk);
 
        /* default values */
        *start = 0;
        *size = i_size_read(sb->s_bdev->bd_inode) >> 9;
 
        if (HFS_SB(sb)->session >= 0) {
+               struct cdrom_tocentry te;
+       
+               if (!cdi)
+                       return -EINVAL;
+
                te.cdte_track = HFS_SB(sb)->session;
                te.cdte_format = CDROM_LBA;
-               res = ioctl_by_bdev(sb->s_bdev, CDROMREADTOCENTRY, (unsigned 
long)&te);
-               if (!res && (te.cdte_ctrl & CDROM_DATA_TRACK) == 4) {
-                       *start = (sector_t)te.cdte_addr.lba << 2;
-                       return 0;
+               if (cdrom_read_tocentry(cdi, &te) ||
+                   (te.cdte_ctrl & CDROM_DATA_TRACK) != 4) {
+                       pr_err("invalid session number or type of track\n");
+                       return -EINVAL;
                }
-               pr_err("invalid session number or type of track\n");
-               return -EINVAL;
+
+               *start = (sector_t)te.cdte_addr.lba << 2;
+       } else if (cdi) {
+               struct cdrom_multisession ms_info;
+
+               ms_info.addr_format = CDROM_LBA;
+               if (cdrom_multisession(cdi, &ms_info) == 0 && ms_info.xa_flag)
+                       *start = (sector_t)ms_info.addr.lba << 2;
        }
-       ms_info.addr_format = CDROM_LBA;
-       res = ioctl_by_bdev(sb->s_bdev, CDROMMULTISESSION, (unsigned 
long)&ms_info);
-       if (!res && ms_info.xa_flag)
-               *start = (sector_t)ms_info.addr.lba << 2;
+
        return 0;
 }
 
-- 
2.26.2