From 0014c75be31d9fa7435105afa9960374a82cc55c Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Wed, 23 Jul 2008 19:56:00 +0200 Subject: [PATCH] ide-tape: pass packet command in rq->cmd Make a redundant copy of the packet command bits into rq->cmd. Later, after all drivers have been converted, it'll be switched to use that in the common code instead of pc->c. While at it, simplify ide_tape_create_rw_cmd. There should be no functionality change resulting from this patch. Signed-off-by: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-tape.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index f43ffb8..a6d4e48 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -730,6 +730,7 @@ static void idetape_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc, rq->cmd_flags |= REQ_PREEMPT; rq->buffer = (char *) pc; rq->rq_disk = tape->disk; + memcpy(rq->cmd, pc->c, 12); ide_do_drive_cmd(drive, rq); } @@ -952,9 +953,12 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) } static void ide_tape_create_rw_cmd(idetape_tape_t *tape, - struct ide_atapi_pc *pc, unsigned int length, - struct idetape_bh *bh, u8 opcode) + struct ide_atapi_pc *pc, struct request *rq, + u8 opcode) { + struct idetape_bh *bh = (struct idetape_bh *)rq->special; + unsigned int length = rq->current_nr_sectors; + idetape_init_pc(pc); put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); pc->c[1] = 1; @@ -974,6 +978,8 @@ static void ide_tape_create_rw_cmd(idetape_tape_t *tape, pc->b_data = bh->b_data; pc->b_count = atomic_read(&bh->b_count); } + + memcpy(rq->cmd, pc->c, 12); } static ide_startstop_t idetape_do_request(ide_drive_t *drive, @@ -1051,16 +1057,12 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, } 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); + ide_tape_create_rw_cmd(tape, pc, rq, READ_6); goto out; } 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); + ide_tape_create_rw_cmd(tape, pc, rq, WRITE_6); goto out; } if (rq->cmd[13] & REQ_IDETAPE_PC1) { @@ -1283,6 +1285,7 @@ static int idetape_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc) rq->cmd_type = REQ_TYPE_SPECIAL; rq->cmd[13] = REQ_IDETAPE_PC1; rq->buffer = (char *)pc; + memcpy(rq->cmd, pc->c, 12); error = blk_execute_rq(drive->queue, tape->disk, rq, 0); blk_put_request(rq); return error; -- 2.7.4