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ide-tape: make room for packet command ids in rq->cmd

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ide-tape uses rq->cmd for special commands from the chrdev interface so move
those to byte 13 (BLK_MAX_CDB = 16) since a packet cmd is max 12 bytes.

There should be no functionality change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Borislav Petkov 2008-07-23 19:56:00 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 20cd93be67
commit 83dd573513
1 changed files with 11 additions and 11 deletions
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22
drivers/ide/ide-tape.c
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@ -703,7 +703,7 @@ static void idetape_init_rq(struct request *rq, u8 cmd)
{ {
blk_rq_init(NULL, rq); blk_rq_init(NULL, rq);
rq->cmd_type = REQ_TYPE_SPECIAL; rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd[0] = cmd; rq->cmd[13] = cmd;
} }
/* /*
@ -1019,7 +1019,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
*/ */
stat = hwif->tp_ops->read_status(hwif); stat = hwif->tp_ops->read_status(hwif);
if (!drive->dsc_overlap && !(rq->cmd[0] & REQ_IDETAPE_PC2)) if (!drive->dsc_overlap && !(rq->cmd[13] & REQ_IDETAPE_PC2))
set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags); set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags);
if (drive->post_reset == 1) { if (drive->post_reset == 1) {
@ -1036,7 +1036,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
} else if (time_after(jiffies, tape->dsc_timeout)) { } else if (time_after(jiffies, tape->dsc_timeout)) {
printk(KERN_ERR "ide-tape: %s: DSC timeout\n", printk(KERN_ERR "ide-tape: %s: DSC timeout\n",
tape->name); tape->name);
if (rq->cmd[0] & REQ_IDETAPE_PC2) { if (rq->cmd[13] & REQ_IDETAPE_PC2) {
idetape_media_access_finished(drive); idetape_media_access_finished(drive);
return ide_stopped; return ide_stopped;
} else { } else {
@ -1049,27 +1049,27 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
idetape_postpone_request(drive); idetape_postpone_request(drive);
return ide_stopped; return ide_stopped;
} }
if (rq->cmd[0] & REQ_IDETAPE_READ) { if (rq->cmd[13] & REQ_IDETAPE_READ) {
pc = idetape_next_pc_storage(drive); pc = idetape_next_pc_storage(drive);
ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors, ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors,
(struct idetape_bh *)rq->special, (struct idetape_bh *)rq->special,
READ_6); READ_6);
goto out; goto out;
} }
if (rq->cmd[0] & REQ_IDETAPE_WRITE) { if (rq->cmd[13] & REQ_IDETAPE_WRITE) {
pc = idetape_next_pc_storage(drive); pc = idetape_next_pc_storage(drive);
ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors, ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors,
(struct idetape_bh *)rq->special, (struct idetape_bh *)rq->special,
WRITE_6); WRITE_6);
goto out; goto out;
} }
if (rq->cmd[0] & REQ_IDETAPE_PC1) { if (rq->cmd[13] & REQ_IDETAPE_PC1) {
pc = (struct ide_atapi_pc *) rq->buffer; pc = (struct ide_atapi_pc *) rq->buffer;
rq->cmd[0] &= ~(REQ_IDETAPE_PC1); rq->cmd[13] &= ~(REQ_IDETAPE_PC1);
rq->cmd[0] |= REQ_IDETAPE_PC2; rq->cmd[13] |= REQ_IDETAPE_PC2;
goto out; goto out;
} }
if (rq->cmd[0] & REQ_IDETAPE_PC2) { if (rq->cmd[13] & REQ_IDETAPE_PC2) {
idetape_media_access_finished(drive); idetape_media_access_finished(drive);
return ide_stopped; return ide_stopped;
} }
@ -1281,7 +1281,7 @@ static int idetape_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc)
rq = blk_get_request(drive->queue, READ, __GFP_WAIT); rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_SPECIAL; rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd[0] = REQ_IDETAPE_PC1; rq->cmd[13] = REQ_IDETAPE_PC1;
rq->buffer = (char *)pc; rq->buffer = (char *)pc;
error = blk_execute_rq(drive->queue, tape->disk, rq, 0); error = blk_execute_rq(drive->queue, tape->disk, rq, 0);
blk_put_request(rq); blk_put_request(rq);
@ -1465,7 +1465,7 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks,
rq = blk_get_request(drive->queue, READ, __GFP_WAIT); rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_SPECIAL; rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd[0] = cmd; rq->cmd[13] = cmd;
rq->rq_disk = tape->disk; rq->rq_disk = tape->disk;
rq->special = (void *)bh; rq->special = (void *)bh;
rq->sector = tape->first_frame; rq->sector = tape->first_frame;