ide-tape: remove never executed code

rq->cmd[0] is never set to REQ_IDETAPE_READ_BUFFER so remove
REQ_IDETAPE_READ_BUFFER handling from idetape_create_write_cmd()
and the define itself.

Then remove no longer used idetape_create_read_buffer_cmd()
and IDETAPE_RETRIEVE_FAULTY_BLOCK define.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 0 insertions, 34 deletions

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 49dd2e7bae7a..0598ecfd5f37 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -466,9 +466,6 @@ static void ide_tape_put(struct ide_tape_obj *tape)
 /* 0 = no tape is loaded, so we don't rewind after ejecting */
 #define IDETAPE_MEDIUM_PRESENT          9
 
-/* A define for the READ BUFFER command */
-#define IDETAPE_RETRIEVE_FAULTY_BLOCK   6
-
 /* Some defines for the SPACE command */
 #define IDETAPE_SPACE_OVER_FILEMARK     1
 #define IDETAPE_SPACE_TO_EOD            3
@@ -490,7 +487,6 @@ enum {
         REQ_IDETAPE_PC2         = (1 << 1), /* packet command (second stage) */
         REQ_IDETAPE_READ        = (1 << 2),
         REQ_IDETAPE_WRITE       = (1 << 3),
-        REQ_IDETAPE_READ_BUFFER = (1 << 4),
 };
 
 /* Error codes returned in rq->errors to the higher part of the driver. */
@@ -1523,29 +1519,6 @@ static void idetape_create_read_cmd(idetape_tape_t *tape, idetape_pc_t *pc,
                 set_bit(PC_DMA_RECOMMENDED, &pc->flags);
 }
 
-static void idetape_create_read_buffer_cmd(idetape_tape_t *tape,
-                idetape_pc_t *pc, struct idetape_bh *bh)
-{
-        int size = 32768;
-        struct idetape_bh *p = bh;
-
-        idetape_init_pc(pc);
-        pc->c[0] = READ_BUFFER;
-        pc->c[1] = IDETAPE_RETRIEVE_FAULTY_BLOCK;
-        pc->c[7] = size >> 8;
-        pc->c[8] = size & 0xff;
-        pc->callback = &idetape_pc_callback;
-        pc->bh = bh;
-        atomic_set(&bh->b_count, 0);
-        pc->buffer = NULL;
-        while (p) {
-                atomic_set(&p->b_count, 0);
-                p = p->b_reqnext;
-        }
-        pc->request_transfer = size;
-        pc->buffer_size = size;
-}
-
 static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc,
                 unsigned int length, struct idetape_bh *bh)
 {
@@ -1655,13 +1628,6 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
                                          (struct idetape_bh *)rq->special);
                 goto out;
         }
-        if (rq->cmd[0] & REQ_IDETAPE_READ_BUFFER) {
-                tape->postpone_cnt = 0;
-                pc = idetape_next_pc_storage(drive);
-                idetape_create_read_buffer_cmd(tape, pc,
-                                (struct idetape_bh *)rq->special);
-                goto out;
-        }
         if (rq->cmd[0] & REQ_IDETAPE_PC1) {
                 pc = (idetape_pc_t *) rq->buffer;
                 rq->cmd[0] &= ~(REQ_IDETAPE_PC1);