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ide-atapi: switch to blk_rq_bytes() on do_request() path

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After the recent struct request cleanups, blk_rq_bytes() is guaranteed
to be valid and is the current total length of the rq's bio. Use that
instead of pc->req_xfer in the do_request() path after the command has
been queued

The remaining usage of pc->req_xfer now is only until we map the rq to a
bio.

While at it:

- remove local caching of rq completion length in ide_tape_issue_pc()

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
This commit is contained in:
Borislav Petkov
2009-05-01 20:35:21 +02:00
parent 10c0b3437c
commit dfb7e621fa
3 changed files with 18 additions and 16 deletions
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8
drivers/ide/ide-floppy.c
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@@ -210,7 +210,7 @@ static void idefloppy_create_rw_cmd(ide_drive_t *drive,
if (rq->cmd_flags & REQ_RW)
pc->flags |= PC_FLAG_WRITING;
pc->buf = NULL;
pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
pc->buf_size = blk_rq_bytes(rq);
pc->flags |= PC_FLAG_DMA_OK;
}
@@ -227,7 +227,7 @@ static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
}
/* pio will be performed by ide_pio_bytes() which handles sg fine */
pc->buf = NULL;
pc->req_xfer = pc->buf_size = blk_rq_bytes(rq);
pc->buf_size = blk_rq_bytes(rq);
}
static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
@@ -286,8 +286,8 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
cmd.rq = rq;
if (blk_fs_request(rq) || pc->req_xfer) {
ide_init_sg_cmd(&cmd, pc->req_xfer);
if (blk_fs_request(rq) || blk_rq_bytes(rq)) {
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
}