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ide-atapi: kill unused fields and callbacks

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Impact: remove fields and code paths which are no longer necessary

Now that ide-tape uses standard mechanisms to transfer data, special
case handling for bh handling can be dropped from ide-atapi.  Drop the
followings.

* pc->cur_pos, b_count, bh and b_data
* drive->pc_update_buffers() and pc_io_buffers().

Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo
2009-04-19 08:46:03 +09:00
committed by Jens Axboe
parent 4344d07fb8
commit 29d1a43710
3 changed files with 4 additions and 26 deletions
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17
drivers/ide/ide-atapi.c
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@@ -359,11 +359,8 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
drive->name, rq_data_dir(pc->rq)
? "write" : "read");
pc->flags |= PC_FLAG_DMA_ERROR;
} else {
} else
pc->xferred = pc->req_xfer;
if (drive->pc_update_buffers)
drive->pc_update_buffers(drive, pc);
}
debug_log("%s: DMA finished\n", drive->name);
}
@@ -463,16 +460,11 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
return ide_do_reset(drive);
}
if (drive->media == ide_tape && pc->bh)
done = drive->pc_io_buffers(drive, pc, bcount, write);
else {
done = min_t(unsigned int, bcount, cmd->nleft);
ide_pio_bytes(drive, cmd, write, done);
}
done = min_t(unsigned int, bcount, cmd->nleft);
ide_pio_bytes(drive, cmd, write, done);
/* Update the current position */
/* Update transferred byte count */
pc->xferred += done;
pc->cur_pos += done;
bcount -= done;
@@ -650,7 +642,6 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, struct ide_cmd *cmd)
/* We haven't transferred any data yet */
pc->xferred = 0;
pc->cur_pos = pc->buf;
valid_tf = IDE_VALID_DEVICE;
bcount = ((drive->media == ide_tape) ?