diff options
| -rw-r--r-- | drivers/ide/ide-tape.c | 22 |
1 files changed, 3 insertions, 19 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 52c64dd1292a..6752d47db2f8 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -265,9 +265,7 @@ typedef struct ide_tape_obj { * 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 @@ static void __idetape_kfree_stage(idetape_stage_t *stage) 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 @@ out: 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 @@ out: * * 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 @@ static int idetape_init_read(ide_drive_t *drive) 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 @@ static int idetape_write_filemark(ide_drive_t *drive) * * 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 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) 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: |