[PATCH 03/14] amiflop,ataflop,xd,mg_disk: clean up unnecessary stuff from block drivers

Tejun Heo
2009-04-28T04:07:50Z

rq_data_dir() can only be READ or WRITE and rq->sector and nr_sectors
are always automatically updated after partial request completion.
Don't worry about rq_data_dir() not being either READ or WRITE or
manually update sector and nr_sectors.

[ Impact: cleanup ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jörg Dorchain <joerg@dorchain.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: unsik Kim <donari75@gmail.com>
---
drivers/block/amiflop.c | 7 -------
drivers/block/ataflop.c | 4 ----
drivers/block/mg_disk.c | 10 ----------
drivers/block/xd.c | 9 ++-------
4 files changed, 2 insertions(+), 28 deletions(-)

diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index b99a2a6..8ff95f2 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1371,11 +1371,6 @@ static void redo_fd_request(void)
"0x%08lx\n", track, sector, data);
#endif

- if ((rq_data_dir(CURRENT) != READ) && (rq_data_dir(CURRENT) != WRITE)) {
- printk(KERN_WARNING "do_fd_request: unknown command\n");
- __blk_end_request_cur(CURRENT, -EIO);
- goto repeat;
- }
if (get_track(drive, track) == -1) {
__blk_end_request_cur(CURRENT, -EIO);
goto repeat;
@@ -1407,8 +1402,6 @@ static void redo_fd_request(void)
break;
}
}
- CURRENT->nr_sectors -= CURRENT->current_nr_sectors;
- CURRENT->sector += CURRENT->current_nr_sectors;

__blk_end_request_cur(CURRENT, 0);
goto repeat;
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index 44a8702..2506728 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -732,8 +732,6 @@ static void do_fd_action( int drive )
}
else {
/* all sectors finished */
- CURRENT->nr_sectors -= CURRENT->current_nr_sectors;
- CURRENT->sector += CURRENT->current_nr_sectors;
__blk_end_request_cur(CURRENT, 0);
redo_fd_request();
return;
@@ -1139,8 +1137,6 @@ static void fd_rwsec_done1(int status)
}
else {
/* all sectors finished */
- CURRENT->nr_sectors -= CURRENT->current_nr_sectors;
- CURRENT->sector += CURRENT->current_nr_sectors;
__blk_end_request_cur(CURRENT, 0);
redo_fd_request();
}
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index 408c2bd..2c00ad9 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -560,11 +560,6 @@ static void mg_request_poll(struct request_queue *q)
case WRITE:
mg_write(req);
break;
- default:
- printk(KERN_WARNING "%s:%d unknown command\n",
- __func__, __LINE__);
- __blk_end_request_cur(req, -EIO);
- break;
}
}
}
@@ -614,11 +609,6 @@ static unsigned int mg_issue_req(struct request *req,
outb(MG_CMD_WR_CONF, (unsigned long)host->dev_base +
MG_REG_COMMAND);
break;
- default:
- printk(KERN_WARNING "%s:%d unknown command\n",
- __func__, __LINE__);
- __blk_end_request_cur(req, -EIO);
- break;
}
return MG_ERR_NONE;
}
diff --git a/drivers/block/xd.c b/drivers/block/xd.c
index 6f6ad82..14be4c1 100644
--- a/drivers/block/xd.c
+++ b/drivers/block/xd.c
@@ -308,7 +308,6 @@ static void do_xd_request (struct request_queue * q)
while ((req = elv_next_request(q)) != NULL) {
unsigned block = req->sector;
unsigned count = req->nr_sectors;
- int rw = rq_data_dir(req);
XD_INFO *disk = req->rq_disk->private_data;
int res = 0;
int retry;
@@ -321,13 +320,9 @@ static void do_xd_request (struct request_queue * q)
__blk_end_request_cur(req, -EIO);
continue;
}
- if (rw != READ && rw != WRITE) {
- printk("do_xd_request: unknown request\n");
- __blk_end_request_cur(req, -EIO);
- continue;
- }
for (retry = 0; (retry < XD_RETRIES) && !res; retry++)
- res = xd_readwrite(rw, disk, req->buffer, block, count);
+ res = xd_readwrite(rq_data_dir(req), disk, req->buffer,
+ block, count);
/* wrap up, 0 = success, -errno = fail */
__blk_end_request_cur(req, res);
}
--
1.6.0.2