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authorBorislav Petkov <petkovbb@googlemail.com>2008-04-27 17:38:27 +0400
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-27 17:38:27 +0400
commit42d5468921e9e9c0a2d13048a2dab09f844e18bc (patch)
tree34896bda779a50bc12194a3659134384da00b1c0 /drivers/ide/ide-tape.c
parent0aa4b01e0345bb43450dee4377fc53fb4fd44eb1 (diff)
downloadlinux-42d5468921e9e9c0a2d13048a2dab09f844e18bc.tar.xz
ide-tape: remove pipelined mode tape control flags
[bart: sync patch with current code and fix idetape_init_read()] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-tape.c')
-rw-r--r--drivers/ide/ide-tape.c43
1 files changed, 11 insertions, 32 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 8eb117519ba4..c4b470999203 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -221,19 +221,15 @@ enum {
/* 0 When the tape position is unknown */
IDETAPE_FLAG_ADDRESS_VALID = (1 << 1),
/* Device already opened */
- IDETAPE_FLAG_BUSY = (1 << 2),
- /* Error detected in a pipeline stage */
- IDETAPE_FLAG_PIPELINE_ERR = (1 << 3),
+ IDETAPE_FLAG_BUSY = (1 << 2),
/* Attempt to auto-detect the current user block size */
- IDETAPE_FLAG_DETECT_BS = (1 << 4),
+ IDETAPE_FLAG_DETECT_BS = (1 << 3),
/* Currently on a filemark */
- IDETAPE_FLAG_FILEMARK = (1 << 5),
+ IDETAPE_FLAG_FILEMARK = (1 << 4),
/* DRQ interrupt device */
- IDETAPE_FLAG_DRQ_INTERRUPT = (1 << 6),
- /* pipeline active */
- IDETAPE_FLAG_PIPELINE_ACTIVE = (1 << 7),
+ IDETAPE_FLAG_DRQ_INTERRUPT = (1 << 5),
/* 0 = no tape is loaded, so we don't rewind after ejecting */
- IDETAPE_FLAG_MEDIUM_PRESENT = (1 << 8),
+ IDETAPE_FLAG_MEDIUM_PRESENT = (1 << 6),
};
/* A pipeline stage. */
@@ -695,7 +691,6 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
ide_end_drive_cmd(drive, 0, 0);
- clear_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
spin_unlock_irqrestore(&tape->lock, flags);
return 0;
}
@@ -1728,8 +1723,6 @@ static int __idetape_discard_read_pipeline(ide_drive_t *drive)
tape->merge_stage = NULL;
}
- /* Clear pipeline flags. */
- clear_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags);
tape->chrdev_dir = IDETAPE_DIR_NONE;
/* Remove pipeline stages. */
@@ -1808,12 +1801,6 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks,
debug_log(DBG_SENSE, "%s: cmd=%d\n", __func__, cmd);
- if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
- printk(KERN_ERR "ide-tape: bug: the pipeline is active in %s\n",
- __func__);
- return (0);
- }
-
idetape_init_rq(&rq, cmd);
rq.rq_disk = tape->disk;
rq.special = (void *)bh;
@@ -1931,7 +1918,6 @@ static void idetape_empty_write_pipeline(ide_drive_t *drive)
__idetape_kfree_stage(tape->merge_stage);
tape->merge_stage = NULL;
}
- clear_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags);
tape->chrdev_dir = IDETAPE_DIR_NONE;
/*
@@ -1993,14 +1979,13 @@ static int idetape_init_read(ide_drive_t *drive, int max_stages)
}
}
- if (!test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
- if (tape->nr_pending_stages >= 3 * max_stages / 4) {
- tape->measure_insert_time = 1;
- tape->insert_time = jiffies;
- tape->insert_size = 0;
- tape->insert_speed = 0;
- }
+ if (tape->nr_pending_stages >= 3 * max_stages / 4) {
+ tape->measure_insert_time = 1;
+ tape->insert_time = jiffies;
+ tape->insert_size = 0;
+ tape->insert_speed = 0;
}
+
return 0;
}
@@ -2020,9 +2005,6 @@ static int idetape_add_chrdev_read_request(ide_drive_t *drive, int blocks)
idetape_init_read(drive, tape->max_stages);
- if (test_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags))
- return 0;
-
return idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, blocks,
tape->merge_stage->bh);
}
@@ -2604,9 +2586,6 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp)
if (!test_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags))
(void)idetape_rewind_tape(drive);
- if (tape->chrdev_dir != IDETAPE_DIR_READ)
- clear_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags);
-
/* Read block size and write protect status from drive. */
ide_tape_get_bsize_from_bdesc(drive);