Akinobu Mita fb19974630 block: fix blk_register_queue() return value ...

blk_register_queue() returns -ENXIO when queue->request_fn is NULL.  But there
are some block drivers that call blk_register_queue() via add_disk() with
queue->request_fn == NULL.  (For example, brd, loop)

Although no one checks return value of blk_register_queue(), this patch makes
it return 0 instead of -ENXIO when queue->request_fn is NULL,

Also this patch adds warning when blk_register_queue() and
blk_unregister_queue() are called with queue == NULL rather than ignore
invalid usage silently.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

2008-04-21 09:51:06 +02:00

..

as-iosched.c

block: kill swap_io_context()

2008-02-01 11:34:49 +01:00

blk-barrier.c

block: fix blkdev_issue_flush() not detecting and passing EOPNOTSUPP back

2008-03-04 11:47:46 +01:00

blk-core.c

unexport blk_{get,put}_queue

2008-03-04 11:28:32 +01:00

blk-exec.c

block: make core bits checkpatch compliant

2008-02-01 09:26:33 +01:00

blk-ioc.c

cfq-iosched: add hlist for browsing parallel to the radix tree

2008-02-19 10:04:00 +01:00

blk-map.c

block: move the padding adjustment to blk_rq_map_sg

2008-04-21 09:50:08 +02:00

blk-merge.c

block: move the padding adjustment to blk_rq_map_sg

2008-04-21 09:50:08 +02:00

blk-settings.c

Fix bounce setting for 64-bit

2008-04-02 09:06:44 +02:00

blk-sysfs.c

block: fix blk_register_queue() return value

2008-04-21 09:51:06 +02:00

blk-tag.c

block/blk-tag.c should #include "blk.h"

2008-03-04 11:28:24 +01:00

blk.h

proper prototype for blk_dev_init()

2008-03-04 11:28:29 +01:00

blktrace.c

blktrace: Add blktrace ioctls to SCSI generic devices

2008-01-28 10:04:46 +01:00

bsg.c

[SCSI] bsg: no need to set BSG_F_BLOCK bit in bsg_complete_all_commands

2008-04-18 11:48:43 -05:00

cfq-iosched.c

cfq-iosched: do not leak ioc_data across iosched switches

2008-04-10 08:28:01 +02:00

compat_ioctl.c

ide: remove broken/dangerous HDIO_[UNREGISTER,SCAN]_HWIF ioctls (take 3)

2008-04-18 00:46:24 +02:00

deadline-iosched.c

block: let elv_register() return void

2007-12-18 08:29:28 +01:00

elevator.c

elevator: make elevator_get() attempt to load the appropriate module

2008-02-19 10:20:37 +01:00

genhd.c

genhd must_check warning fix

2008-03-12 12:34:37 -07:00

ioctl.c

compat_ioctl: move common block ioctls to compat_blkdev_ioctl

2007-10-10 09:26:00 +02:00

Kconfig

Kconfig: clean up block/Kconfig help descriptions

2008-04-21 09:51:04 +02:00

Kconfig.iosched

update I/O sched Kconfig help texts - CFQ is now default, not AS.

2007-02-17 20:08:22 +01:00

Makefile

block: ll_rw_blk.c split, add blk-merge.c

2008-01-29 21:55:12 +01:00

noop-iosched.c

block: let elv_register() return void

2007-12-18 08:29:28 +01:00

scsi_ioctl.c

block: restore the meaning of rq->data_len to the true data length

2008-03-04 11:17:11 +01:00