drive->dsc_overlap is supported only by ide-{cd,tape} drivers.
Add missing clearing of ->dsc_overlap to ide_{cd,tape}_release()
and move ->dsc_overlap setup from ide_register_subdriver() to
ide_cdrom_setup() (ide-tape enables it unconditionally).
diff -Nru a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
--- a/drivers/ide/ide-cd.c 2005-02-04 03:31:14 +01:00
+++ b/drivers/ide/ide-cd.c 2005-02-04 03:31:14 +01:00
@@ -3219,6 +3219,9 @@
*/
blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
+ if (drive->autotune == IDE_TUNE_DEFAULT ||
+ drive->autotune == IDE_TUNE_AUTO)
+ drive->dsc_overlap = (drive->next != drive);
#if 0
drive->dsc_overlap = (HWIF(drive)->no_dsc) ? 0 : 1;
if (HWIF(drive)->no_dsc) {
@@ -3282,6 +3285,7 @@
if (devinfo->handle == drive && unregister_cdrom(devinfo))
printk(KERN_ERR "%s: %s failed to unregister device from the
cdrom "
"driver.\n", __FUNCTION__, drive->name);
+ drive->dsc_overlap = 0;
drive->driver_data = NULL;
blk_queue_prep_rq(drive->queue, NULL);
g->private_data = NULL;
diff -Nru a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
--- a/drivers/ide/ide-tape.c 2005-02-04 03:31:14 +01:00
+++ b/drivers/ide/ide-tape.c 2005-02-04 03:31:14 +01:00
@@ -4691,6 +4691,7 @@
ide_drive_t *drive = tape->drive;
struct gendisk *g = drive->disk;
+ drive->dsc_overlap = 0;
drive->driver_data = NULL;
devfs_remove("%s/mt", drive->devfs_name);
devfs_remove("%s/mtn", drive->devfs_name);
diff -Nru a/drivers/ide/ide.c b/drivers/ide/ide.c
--- a/drivers/ide/ide.c 2005-02-04 03:31:14 +01:00
+++ b/drivers/ide/ide.c 2005-02-04 03:31:14 +01:00
@@ -2029,11 +2029,6 @@
list_add_tail(&drive->list, &driver->drives);
spin_unlock(&drives_lock);
// printk(KERN_INFO "%s: attached %s driver.\n", drive->name,
driver->name);
- if ((drive->autotune == IDE_TUNE_DEFAULT) ||
- (drive->autotune == IDE_TUNE_AUTO)) {
- /* DMA timings and setup moved to ide-probe.c */
- drive->dsc_overlap = (drive->next != drive &&
driver->supports_dsc_overlap);
- }
#ifdef CONFIG_PROC_FS
if (drive->driver != &idedefault_driver)
ide_add_proc_entries(drive->proc, driver->proc, drive);
-
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