diff options
| author | Tejun Heo <tj@kernel.org> | 2009-04-18 22:00:42 (GMT) |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-04-18 22:00:42 (GMT) |
| commit | 7f006dc24fae158131116c9472874f12e16cf040 (patch) | |
| tree | 3b9999555f68297bef45deda4df902431d763a44 | |
| parent | 1873b90cdea038715ec7140fccc2116fb930ffb5 (diff) | |
| download | linux-7f006dc24fae158131116c9472874f12e16cf040.tar.xz | |
ide-floppy: block pc always uses bio
Impact: remove unnecessary code path
Block pc requests always use bio and rq->data is always NULL. No need
to worry about !rq->bio cases in idefloppy_block_pc_cmd(). Note that
ide-atapi uses ide_pio_bytes() for bio PIO transfer which handle sg
fine.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/ide/ide-floppy.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 2b4868d..3b22e06 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -216,15 +216,13 @@ static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy, ide_init_pc(pc); memcpy(pc->c, rq->cmd, sizeof(pc->c)); pc->rq = rq; - if (rq->data_len && rq_data_dir(rq) == WRITE) - pc->flags |= PC_FLAG_WRITING; - pc->buf = rq->data; - if (rq->bio) + if (rq->data_len) { pc->flags |= PC_FLAG_DMA_OK; - /* - * possibly problematic, doesn't look like ide-floppy correctly - * handled scattered requests if dma fails... - */ + if (rq_data_dir(rq) == WRITE) + pc->flags |= PC_FLAG_WRITING; + } + /* pio will be performed by ide_pio_bytes() which handles sg fine */ + pc->buf = NULL; pc->req_xfer = pc->buf_size = rq->data_len; } |