2 files changed, 10 insertions, 9 deletions

diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 8f6b5bf580f6..2b5b8a93bc10 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -801,15 +801,10 @@ static int idescsi_ide_open(struct inode *inode, struct file *filp)
 {
         struct gendisk *disk = inode->i_bdev->bd_disk;
         struct ide_scsi_obj *scsi;
-        ide_drive_t *drive;
 
         if (!(scsi = ide_scsi_get(disk)))
                 return -ENXIO;
 
-        drive = scsi->drive;
-
-        drive->usage++;
-
         return 0;
 }
 
@@ -817,9 +812,6 @@ static int idescsi_ide_release(struct inode *inode, struct file *filp)
 {
         struct gendisk *disk = inode->i_bdev->bd_disk;
         struct ide_scsi_obj *scsi = ide_scsi_g(disk);
-        ide_drive_t *drive = scsi->drive;
-
-        drive->usage--;
 
         ide_scsi_put(scsi);
 
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3f048bd6326d..5a8f55fea5ff 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1269,9 +1269,18 @@ repeat:
 
         /* Some devices return the total number of sectors, not the
          * highest sector number.  Make the necessary adjustment. */
-        if (sdp->fix_capacity)
+        if (sdp->fix_capacity) {
                 --sdkp->capacity;
 
+        /* Some devices have version which report the correct sizes
+         * and others which do not. We guess size according to a heuristic
+         * and err on the side of lowering the capacity. */
+        } else {
+                if (sdp->guess_capacity)
+                        if (sdkp->capacity & 0x01) /* odd sizes are odd */
+                                --sdkp->capacity;
+        }
+
 got_data:
         if (sector_size == 0) {
                 sector_size = 512;