ide: merge task_{in,out}_intr()

* Merge task_out_intr() with task_in_intr().

* Rename task_in_intr() to task_pio_intr().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 31 insertions, 41 deletions

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 0c9d71485728..99d6ed434978 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -55,7 +55,7 @@ int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
 
 static ide_startstop_t task_no_data_intr(ide_drive_t *);
 static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
-static ide_startstop_t task_in_intr(ide_drive_t *);
+static ide_startstop_t task_pio_intr(ide_drive_t *);
 
 ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
 {
@@ -92,7 +92,7 @@ ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
                         ndelay(400);    /* FIXME */
                         return pre_task_out_intr(drive, cmd);
                 }
-                handler = task_in_intr;
+                handler = task_pio_intr;
                 /* fall-through */
         case ATA_PROT_NODATA:
                 if (handler == NULL)
@@ -329,68 +329,57 @@ static ide_startstop_t task_in_unexpected(ide_drive_t *drive,
         }
 
         /* Assume it was a spurious irq */
-        ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
+        ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL);
+
         return ide_started;
 }
 
 /*
- * Handler for command with PIO data-in phase (Read/Read Multiple).
+ * Handler for command with PIO data phase.
  */
-static ide_startstop_t task_in_intr(ide_drive_t *drive)
+static ide_startstop_t task_pio_intr(ide_drive_t *drive)
 {
         ide_hwif_t *hwif = drive->hwif;
         struct ide_cmd *cmd = &drive->hwif->cmd;
         u8 stat = hwif->tp_ops->read_status(hwif);
+        u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
 
-        /* Error? */
-        if (stat & ATA_ERR)
-                return task_error(drive, cmd, __func__, stat);
-
-        /* Didn't want any data? Odd. */
-        if ((stat & ATA_DRQ) == 0)
-                return task_in_unexpected(drive, cmd, stat);
+        if (write == 0) {
+                /* Error? */
+                if (stat & ATA_ERR)
+                        return task_error(drive, cmd, __func__, stat);
 
-        ide_pio_datablock(drive, cmd, 0);
+                /* Didn't want any data? Odd. */
+                if ((stat & ATA_DRQ) == 0)
+                        return task_in_unexpected(drive, cmd, stat);
+        } else {
+                if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
+                        return task_error(drive, cmd, __func__, stat);
 
-        /* Are we done? Check status and finish transfer. */
-        if (cmd->nleft == 0) {
-                stat = wait_drive_not_busy(drive);
-                if (!OK_STAT(stat, 0, BAD_STAT))
+                /* Deal with unexpected ATA data phase. */
+                if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
                         return task_error(drive, cmd, __func__, stat);
+        }
+
+        if (write && cmd->nleft == 0) {
                 ide_finish_cmd(drive, cmd, stat);
                 return ide_stopped;
         }
 
         /* Still data left to transfer. */
-        ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
-
-        return ide_started;
-}
-
-/*
- * Handler for command with PIO data-out phase (Write/Write Multiple).
- */
-static ide_startstop_t task_out_intr (ide_drive_t *drive)
-{
-        ide_hwif_t *hwif = drive->hwif;
-        struct ide_cmd *cmd = &drive->hwif->cmd;
-        u8 stat = hwif->tp_ops->read_status(hwif);
-
-        if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
-                return task_error(drive, cmd, __func__, stat);
+        ide_pio_datablock(drive, cmd, write);
 
-        /* Deal with unexpected ATA data phase. */
-        if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
-                return task_error(drive, cmd, __func__, stat);
-
-        if (cmd->nleft == 0) {
+        /* Are we done? Check status and finish transfer. */
+        if (write == 0 && cmd->nleft == 0) {
+                stat = wait_drive_not_busy(drive);
+                if (!OK_STAT(stat, 0, BAD_STAT))
+                        return task_error(drive, cmd, __func__, stat);
                 ide_finish_cmd(drive, cmd, stat);
                 return ide_stopped;
         }
 
         /* Still data left to transfer. */
-        ide_pio_datablock(drive, cmd, 1);
-        ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
+        ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL);
 
         return ide_started;
 }
@@ -412,7 +401,8 @@ static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,
         if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
                 local_irq_disable();
 
-        ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
+        ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL);
+
         ide_pio_datablock(drive, cmd, 1);
 
         return ide_started;