[SCSI] st: get rid of scsi_tapes array
st currently allocates an array to store pointers to all of the
scsi_tape objects. It's used to discover available indexes to use as the
base for the minor number selection and later to look up scsi_tape
devices for character devices.
We switch to using an IDR for minor selection and a pointer from
st_modedef back to scsi_tape for the lookups.
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/st.h b/drivers/scsi/st.h
index b548923..8a23640 100644
--- a/drivers/scsi/st.h
+++ b/drivers/scsi/st.h
@@ -66,6 +66,7 @@
unsigned char default_compression; /* 0 = don't touch, etc */
short default_density; /* Forced density, -1 = no value */
int default_blksize; /* Forced blocksize, -1 = no value */
+ struct scsi_tape *tape;
struct cdev *cdevs[2]; /* Auto-rewind and non-rewind devices */
};
@@ -99,6 +100,7 @@
struct mutex lock; /* For serialization */
struct completion wait; /* For SCSI commands */
struct st_buffer *buffer;
+ int index;
/* Drive characteristics */
unsigned char omit_blklims;