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ide: unify exit paths in task_pio_intr()

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There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-03-27 12:46:41 +01:00
parent 151055ed84
commit 0a1248c5a7
1 changed files with 17 additions and 20 deletions
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37
drivers/ide/ide-taskfile.c
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@ -326,35 +326,28 @@ static ide_startstop_t task_pio_intr(ide_drive_t *drive)
if (write == 0) {
/* Error? */
if (stat & ATA_ERR)
return task_error(drive, cmd, __func__, stat);
goto out_err;
/* Didn't want any data? Odd. */
if ((stat & ATA_DRQ) == 0) {
/* Command all done? */
if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) {
ide_finish_cmd(drive, cmd, stat);
return ide_stopped;
}
if (OK_STAT(stat, ATA_DRDY, ATA_BUSY))
goto out_end;
/* Assume it was a spurious irq */
ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE,
NULL);
return ide_started;
goto out_wait;
}
} else {
if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
return task_error(drive, cmd, __func__, stat);
goto out_err;
/* Deal with unexpected ATA data phase. */
if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
return task_error(drive, cmd, __func__, stat);
goto out_err;
}
if (write && cmd->nleft == 0) {
ide_finish_cmd(drive, cmd, stat);
return ide_stopped;
}
if (write && cmd->nleft == 0)
goto out_end;
/* Still data left to transfer. */
ide_pio_datablock(drive, cmd, write);
@ -363,15 +356,19 @@ static ide_startstop_t task_pio_intr(ide_drive_t *drive)
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;
}
goto out_err;
goto out_end;
}
out_wait:
/* Still data left to transfer. */
ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL);
return ide_started;
out_end:
ide_finish_cmd(drive, cmd, stat);
return ide_stopped;
out_err:
return task_error(drive, cmd, __func__, stat);
}
static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,