ide-tape: remove misc references to pipelined operation in the comments
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 52c64dd..6752d47 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -265,9 +265,7 @@
* While polling for DSC we use postponed_rq to postpone the current
* request so that ide.c will be able to service pending requests on the
* other device. Note that at most we will have only one DSC (usually
- * data transfer) request in the device request queue. Additional
- * requests can be queued in our internal pipeline, but they will be
- * visible to ide.c only one at a time.
+ * data transfer) request in the device request queue.
*/
struct request *postponed_rq;
/* The time in which we started polling for DSC */
@@ -608,10 +606,6 @@
kfree(stage);
}
-/*
- * Finish servicing a request and insert a pending pipeline request into the
- * main device queue.
- */
static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
{
struct request *rq = HWGROUP(drive)->rq;
@@ -1295,8 +1289,6 @@
return idetape_issue_pc(drive, pc);
}
-/* Pipeline related functions */
-
/*
* The function below uses __get_free_page to allocate a pipeline stage, along
* with all the necessary small buffers which together make a buffer of size
@@ -1305,9 +1297,6 @@
*
* It returns a pointer to the new allocated stage, or NULL if we can't (or
* don't want to) allocate a stage.
- *
- * Pipeline stages are optional and are used to increase performance. If we
- * can't allocate them, we'll manage without them.
*/
static idetape_stage_t *__idetape_kmalloc_stage(idetape_tape_t *tape, int full,
int clear)
@@ -1875,10 +1864,7 @@
return 0;
}
-/*
- * Called from idetape_chrdev_read() to service a character device read request
- * and add read-ahead requests to our pipeline.
- */
+/* called from idetape_chrdev_read() to service a chrdev read request. */
static int idetape_add_chrdev_read_request(ide_drive_t *drive, int blocks)
{
idetape_tape_t *tape = drive->driver_data;
@@ -2216,8 +2202,7 @@
*
* Note: MTBSF and MTBSFM are not supported when the tape doesn't support
* spacing over filemarks in the reverse direction. In this case, MTFSFM is also
- * usually not supported (it is supported in the rare case in which we crossed
- * the filemark during our read-ahead pipelined operation mode).
+ * usually not supported.
*
* The following commands are currently not supported:
*
@@ -2233,7 +2218,6 @@
debug_log(DBG_ERR, "Handling MTIOCTOP ioctl: mt_op=%d, mt_count=%d\n",
mt_op, mt_count);
- /* Commands which need our pipelined read-ahead stages. */
switch (mt_op) {
case MTFSF:
case MTFSFM: