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Subject[PATCH 07/16] ide-tape: make room for packet command ids in rq->cmd
Date
From
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>
---
drivers/ide/ide-tape.c | 22 +++++++++++-----------
1 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index b9179ee..efe9c51 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -704,7 +704,7 @@ static void idetape_init_rq(struct request *rq, u8 cmd)
{
blk_rq_init(NULL, rq);
rq->cmd_type = REQ_TYPE_SPECIAL;
- rq->cmd[0] = cmd;
+ rq->cmd[13] = cmd;
}

/*
@@ -1018,7 +1018,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
*/
stat = ide_read_status(drive);

- 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);

if (drive->post_reset == 1) {
@@ -1035,7 +1035,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
} else if (time_after(jiffies, tape->dsc_timeout)) {
printk(KERN_ERR "ide-tape: %s: DSC timeout\n",
tape->name);
- if (rq->cmd[0] & REQ_IDETAPE_PC2) {
+ if (rq->cmd[13] & REQ_IDETAPE_PC2) {
idetape_media_access_finished(drive);
return ide_stopped;
} else {
@@ -1048,27 +1048,27 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
idetape_postpone_request(drive);
return ide_stopped;
}
- if (rq->cmd[0] & REQ_IDETAPE_READ) {
+ if (rq->cmd[13] & REQ_IDETAPE_READ) {
pc = idetape_next_pc_storage(drive);
ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors,
(struct idetape_bh *)rq->special,
READ_6);
goto out;
}
- if (rq->cmd[0] & REQ_IDETAPE_WRITE) {
+ if (rq->cmd[13] & REQ_IDETAPE_WRITE) {
pc = idetape_next_pc_storage(drive);
ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors,
(struct idetape_bh *)rq->special,
WRITE_6);
goto out;
}
- if (rq->cmd[0] & REQ_IDETAPE_PC1) {
+ if (rq->cmd[13] & REQ_IDETAPE_PC1) {
pc = (struct ide_atapi_pc *) rq->buffer;
- rq->cmd[0] &= ~(REQ_IDETAPE_PC1);
- rq->cmd[0] |= REQ_IDETAPE_PC2;
+ rq->cmd[13] &= ~(REQ_IDETAPE_PC1);
+ rq->cmd[13] |= REQ_IDETAPE_PC2;
goto out;
}
- if (rq->cmd[0] & REQ_IDETAPE_PC2) {
+ if (rq->cmd[13] & REQ_IDETAPE_PC2) {
idetape_media_access_finished(drive);
return ide_stopped;
}
@@ -1280,7 +1280,7 @@ 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->cmd_type = REQ_TYPE_SPECIAL;
- rq->cmd[0] = REQ_IDETAPE_PC1;
+ rq->cmd[13] = REQ_IDETAPE_PC1;
rq->buffer = (char *)pc;
error = blk_execute_rq(drive->queue, tape->disk, rq, 0);
blk_put_request(rq);
@@ -1464,7 +1464,7 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks,

rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_SPECIAL;
- rq->cmd[0] = cmd;
+ rq->cmd[13] = cmd;
rq->rq_disk = tape->disk;
rq->special = (void *)bh;
rq->sector = tape->first_frame;
--
1.5.5.4


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