ide: remove REQ_TYPE_ATA_CMD

Based on the earlier work by Tejun Heo.

All users are gone so we can finally remove it.

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

3 files changed, 11 insertions, 113 deletions

diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index cad057d25a29..6f8f544392a8 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -354,7 +354,6 @@ void ide_tf_read(ide_drive_t *drive, ide_task_t *task)
  
 void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
 {
-        ide_hwif_t *hwif = HWIF(drive);
         unsigned long flags;
         struct request *rq;
 
@@ -362,19 +361,7 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
         rq = HWGROUP(drive)->rq;
         spin_unlock_irqrestore(&ide_lock, flags);
 
-        if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
-                u8 *args = (u8 *) rq->buffer;
-                if (rq->errors == 0)
-                        rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
-
-                if (args) {
-                        args[0] = stat;
-                        args[1] = err;
-                        /* be sure we're looking at the low order bits */
-                        hwif->OUTB(drive->ctl & ~0x80, IDE_CONTROL_REG);
-                        args[2] = hwif->INB(IDE_NSECTOR_REG);
-                }
-        } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+        if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
                 ide_task_t *args = (ide_task_t *) rq->special;
                 if (rq->errors == 0)
                         rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
@@ -624,48 +611,6 @@ ide_startstop_t ide_abort(ide_drive_t *drive, const char *msg)
                 return __ide_abort(drive, rq);
 }
 
-/**
- *      drive_cmd_intr          -       drive command completion interrupt
- *      @drive: drive the completion interrupt occurred on
- *
- *      drive_cmd_intr() is invoked on completion of a special DRIVE_CMD.
- *      We do any necessary data reading and then wait for the drive to
- *      go non busy. At that point we may read the error data and complete
- *      the request
- */
- 
-static ide_startstop_t drive_cmd_intr (ide_drive_t *drive)
-{
-        struct request *rq = HWGROUP(drive)->rq;
-        ide_hwif_t *hwif = HWIF(drive);
-        u8 *args = (u8 *)rq->buffer, pio_in = (args && args[3]) ? 1 : 0, stat;
-
-        if (pio_in) {
-                u8 io_32bit = drive->io_32bit;
-                stat = hwif->INB(IDE_STATUS_REG);
-                if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) {
-                        if (stat & (ERR_STAT | DRQ_STAT))
-                                return ide_error(drive, __FUNCTION__, stat);
-                        ide_set_handler(drive, &drive_cmd_intr, WAIT_WORSTCASE,
-                                        NULL);
-                        return ide_started;
-                }
-                drive->io_32bit = 0;
-                hwif->ata_input_data(drive, &args[4], args[3] * SECTOR_WORDS);
-                drive->io_32bit = io_32bit;
-                stat = wait_drive_not_busy(drive);
-        } else {
-                local_irq_enable_in_hardirq();
-                stat = hwif->INB(IDE_STATUS_REG);
-        }
-
-        if (!OK_STAT(stat, (pio_in ? 0 : READY_STAT), BAD_STAT))
-                return ide_error(drive, __FUNCTION__, stat);
-                /* calls ide_end_drive_cmd */
-        ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG));
-        return ide_stopped;
-}
-
 static void ide_tf_set_specify_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
 {
         tf->nsect   = drive->sect;
@@ -851,16 +796,9 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
                 struct request *rq)
 {
         ide_hwif_t *hwif = HWIF(drive);
-        u8 *args = rq->buffer;
-        ide_task_t ltask;
-        struct ide_taskfile *tf = &ltask.tf;
-
-        if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
-                ide_task_t *task = rq->special;
- 
-                if (task == NULL)
-                        goto done;
+        ide_task_t *task = rq->special;
 
+        if (task) {
                 hwif->data_phase = task->data_phase;
 
                 switch (hwif->data_phase) {
@@ -877,33 +815,6 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
                 return do_rw_taskfile(drive, task);
         }
 
-        if (args == NULL)
-                goto done;
-
-        memset(&ltask, 0, sizeof(ltask));
-        if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
-#ifdef DEBUG
-                printk("%s: DRIVE_CMD\n", drive->name);
-#endif
-                tf->feature = args[2];
-                if (args[0] == WIN_SMART) {
-                        tf->nsect = args[3];
-                        tf->lbal  = args[1];
-                        tf->lbam  = 0x4f;
-                        tf->lbah  = 0xc2;
-                        ltask.tf_flags = IDE_TFLAG_OUT_TF;
-                } else {
-                        tf->nsect = args[1];
-                        ltask.tf_flags = IDE_TFLAG_OUT_FEATURE |
-                                         IDE_TFLAG_OUT_NSECT;
-                }
-        }
-        tf->command = args[0];
-        ide_tf_load(drive, &ltask);
-        ide_execute_command(drive, args[0], &drive_cmd_intr, WAIT_WORSTCASE, NULL);
-        return ide_started;
-
-done:
         /*
          * NULL is actually a valid way of waiting for
          * all current requests to be flushed from the queue.
@@ -1007,8 +918,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
                 if (drive->current_speed == 0xff)
                         ide_config_drive_speed(drive, drive->desired_speed);
 
-                if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
-                    rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
+                if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
                         return execute_drive_cmd(drive, rq);
                 else if (blk_pm_request(rq)) {
                         struct request_pm_state *pm = rq->data;
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index a3bd8e8ed6b0..9b44fbdfe41f 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -454,8 +454,7 @@ int ide_set_xfer_rate(ide_drive_t *drive, u8 rate)
 static void ide_dump_opcode(ide_drive_t *drive)
 {
         struct request *rq;
-        u8 opcode = 0;
-        int found = 0;
+        ide_task_t *task = NULL;
 
         spin_lock(&ide_lock);
         rq = NULL;
@@ -464,25 +463,15 @@ static void ide_dump_opcode(ide_drive_t *drive)
         spin_unlock(&ide_lock);
         if (!rq)
                 return;
-        if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
-                char *args = rq->buffer;
-                if (args) {
-                        opcode = args[0];
-                        found = 1;
-                }
-        } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
-                ide_task_t *args = rq->special;
-                if (args) {
-                        opcode = args->tf.command;
-                        found = 1;
-                }
-        }
+
+        if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
+                task = rq->special;
 
         printk("ide: failed opcode was: ");
-        if (!found)
-                printk("unknown\n");
+        if (task == NULL)
+                printk(KERN_CONT "unknown\n");
         else
-                printk("0x%02x\n", opcode);
+                printk(KERN_CONT "0x%02x\n", task->tf.command);
 }
 
 u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index bd20a4e8663a..49b7a4c31a6d 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -143,7 +143,6 @@ enum rq_cmd_type_bits {
          * use REQ_TYPE_SPECIAL and use rq->cmd[0] with the range of driver
          * private REQ_LB opcodes to differentiate what type of request this is
          */
-        REQ_TYPE_ATA_CMD,
         REQ_TYPE_ATA_TASKFILE,
         REQ_TYPE_ATA_PC,
 };