diff options
| author | Tejun Heo <tj@kernel.org> | 2009-04-19 07:00:42 +0900 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-04-28 07:37:29 +0200 |
| commit | 8968932e54db35cf9d69cfbbd50c26dfaaa586c7 (patch) | |
| tree | 3ed9e5441de92603ad60755b7f0a6129eef17c7d /drivers/ide/ide-floppy.c | |
| parent | 59a4f6f355fc718581ddcf1bb45a469d4756c035 (diff) | |
| download | lwn-8968932e54db35cf9d69cfbbd50c26dfaaa586c7.tar.gz lwn-8968932e54db35cf9d69cfbbd50c26dfaaa586c7.zip | |
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>
Diffstat (limited to 'drivers/ide/ide-floppy.c')
| -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 2b4868d95f8b..3b22e066287e 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; } |