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authorTejun Heo <tj@kernel.org>2009-04-23 04:05:19 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-04-28 07:37:36 +0200
commitf06d9a2b52e246a66b606130cea3f0d7b7be17a7 (patch)
tree020df1f9d54b00c72d8af02ac0827d496597e75a /drivers/block/xd.c
parentblock: implement and use [__]blk_end_request_all() (diff)
downloadlinux-f06d9a2b52e246a66b606130cea3f0d7b7be17a7.tar.xz
linux-f06d9a2b52e246a66b606130cea3f0d7b7be17a7.zip
block: replace end_request() with [__]blk_end_request_cur()
end_request() has been kept around for backward compatibility; however, it's about time for it to go away. * There aren't too many users left. * Its use of @updtodate is pretty confusing. * In some cases, newer code ends up using mixture of end_request() and [__]blk_end_request[_all](), which is way too confusing. So, add [__]blk_end_request_cur() and replace end_request() with it. Most conversions are straightforward. Noteworthy ones are... * paride/pcd: next_request() updated to take 0/-errno instead of 1/0. * paride/pf: pf_end_request() and next_request() updated to take 0/-errno instead of 1/0. * xd: xd_readwrite() updated to return 0/-errno instead of 1/0. * mtd/mtd_blkdevs: blktrans_discard_request() updated to return 0/-errno instead of 1/0. Unnecessary local variable res initialization removed from mtd_blktrans_thread(). [ Impact: cleanup ] Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Joerg Dorchain <joerg@dorchain.net> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Laurent Vivier <Laurent@lvivier.info> Cc: Tim Waugh <tim@cyberelk.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: unsik Kim <donari75@gmail.com>
Diffstat (limited to 'drivers/block/xd.c')
-rw-r--r--drivers/block/xd.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/block/xd.c b/drivers/block/xd.c
index 64b496fce98b..6f6ad82ec0c0 100644
--- a/drivers/block/xd.c
+++ b/drivers/block/xd.c
@@ -314,21 +314,22 @@ static void do_xd_request (struct request_queue * q)
int retry;
if (!blk_fs_request(req)) {
- end_request(req, 0);
+ __blk_end_request_cur(req, -EIO);
continue;
}
if (block + count > get_capacity(req->rq_disk)) {
- end_request(req, 0);
+ __blk_end_request_cur(req, -EIO);
continue;
}
if (rw != READ && rw != WRITE) {
printk("do_xd_request: unknown request\n");
- end_request(req, 0);
+ __blk_end_request_cur(req, -EIO);
continue;
}
for (retry = 0; (retry < XD_RETRIES) && !res; retry++)
res = xd_readwrite(rw, disk, req->buffer, block, count);
- end_request(req, res); /* wrap up, 0 = fail, 1 = success */
+ /* wrap up, 0 = success, -errno = fail */
+ __blk_end_request_cur(req, res);
}
}
@@ -418,7 +419,7 @@ static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_
printk("xd%c: %s timeout, recalibrating drive\n",'a'+drive,(operation == READ ? "read" : "write"));
xd_recalibrate(drive);
spin_lock_irq(&xd_lock);
- return (0);
+ return -EIO;
case 2:
if (sense[0] & 0x30) {
printk("xd%c: %s - ",'a'+drive,(operation == READ ? "reading" : "writing"));
@@ -439,7 +440,7 @@ static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_
else
printk(" - no valid disk address\n");
spin_lock_irq(&xd_lock);
- return (0);
+ return -EIO;
}
if (xd_dma_buffer)
for (i=0; i < (temp * 0x200); i++)
@@ -448,7 +449,7 @@ static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_
count -= temp, buffer += temp * 0x200, block += temp;
}
spin_lock_irq(&xd_lock);
- return (1);
+ return 0;
}
/* xd_recalibrate: recalibrate a given drive and reset controller if necessary */