From 7f006dc24fae158131116c9472874f12e16cf040 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sun, 19 Apr 2009 07:00:42 +0900 Subject: [PATCH] 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 Cc: Jens Axboe --- drivers/ide/ide-floppy.c | 14 ++++++-------- 1 file 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; }