[ide] kill ide_driver_t->pre_reset

Add ide_drive_t->post_reset flag and use it to signal post reset
condition to the ide-tape driver (the only user of ->pre_reset).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-iops.c

@@ -1127,7 +1127,7 @@ static void pre_reset(ide_drive_t *drive)
 	if (drive->media == ide_disk)
 		ide_disk_pre_reset(drive);
 	else
-		drive->driver->pre_reset(drive);
+		drive->post_reset = 1;
 
 	if (!drive->keep_settings) {
 		if (drive->using_dma) {

drivers/ide/ide-tape.c

@@ -2428,6 +2428,11 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
 	if (!drive->dsc_overlap && !(rq->cmd[0] & REQ_IDETAPE_PC2))
 		set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
 
+	if (drive->post_reset == 1) {
+		set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
+		drive->post_reset = 0;
+	}
+
 	if (tape->tape_still_time > 100 && tape->tape_still_time < 200)
 		tape->measure_insert_time = 1;
 	if (time_after(jiffies, tape->insert_time))
@@ -3558,16 +3563,6 @@ static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd, unsigned l
 	return 0;
 }
 
-/*
- *	idetape_pre_reset is called before an ATAPI/ATA software reset.
- */
-static void idetape_pre_reset (ide_drive_t *drive)
-{
-	idetape_tape_t *tape = drive->driver_data;
-	if (tape != NULL)
-		set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
-}
-
 /*
  *	idetape_space_over_filemarks is now a bit more complicated than just
  *	passing the command to the tape since we may have crossed some
@@ -4697,7 +4692,6 @@ static ide_driver_t idetape_driver = {
 	.cleanup		= idetape_cleanup,
 	.do_request		= idetape_do_request,
 	.end_request		= idetape_end_request,
-	.pre_reset		= idetape_pre_reset,
 	.proc			= idetape_proc,
 	.attach			= idetape_attach,
 	.drives			= LIST_HEAD_INIT(idetape_driver.drives),

drivers/ide/ide.c

@@ -2042,10 +2042,6 @@ default_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
 	return __ide_error(drive, rq, stat, err);
 }
 
-static void default_pre_reset (ide_drive_t *drive)
-{
-}
-
 static sector_t default_capacity (ide_drive_t *drive)
 {
 	return 0x7fffffff;
@@ -2064,7 +2060,6 @@ static void setup_driver_defaults (ide_driver_t *d)
 	if (d->end_request == NULL)	d->end_request = default_end_request;
 	if (d->error == NULL)		d->error = default_error;
 	if (d->abort == NULL)		d->abort = default_abort;
-	if (d->pre_reset == NULL)	d->pre_reset = default_pre_reset;
 	if (d->capacity == NULL)	d->capacity = default_capacity;
 }
 

include/linux/ide.h

@@ -718,6 +718,7 @@ typedef struct ide_drive_s {
 					 */
 	unsigned scsi		: 1;	/* 0=default, 1=ide-scsi emulation */
 	unsigned sleeping	: 1;	/* 1=sleeping & sleep field valid */
+	unsigned post_reset	: 1;
 
         u8	quirk_list;	/* considered quirky, set for a specific host */
         u8	init_speed;	/* transfer rate set at boot */
@@ -1097,7 +1098,6 @@ typedef struct ide_driver_s {
 	ide_startstop_t	(*error)(ide_drive_t *, struct request *rq, u8, u8);
 	ide_startstop_t	(*abort)(ide_drive_t *, struct request *rq);
 	int		(*ioctl)(ide_drive_t *, struct inode *, struct file *, unsigned int, unsigned long);
-	void		(*pre_reset)(ide_drive_t *);
 	sector_t	(*capacity)(ide_drive_t *);
 	ide_proc_entry_t	*proc;
 	int		(*attach)(ide_drive_t *);