linux/drivers/firewire
Jeff Garzik f281233d3e SCSI host lock push-down
Move the mid-layer's ->queuecommand() invocation from being locked
with the host lock to being unlocked to facilitate speeding up the
critical path for drivers who don't need this lock taken anyway.

The patch below presents a simple SCSI host lock push-down as an
equivalent transformation.  No locking or other behavior should change
with this patch.  All existing bugs and locking orders are preserved.

Additionally, add one parameter to queuecommand,
	struct Scsi_Host *
and remove one parameter from queuecommand,
	void (*done)(struct scsi_cmnd *)

Scsi_Host* is a convenient pointer that most host drivers need anyway,
and 'done' is redundant to struct scsi_cmnd->scsi_done.

Minimal code disturbance was attempted with this change.  Most drivers
needed only two one-line modifications for their host lock push-down.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Acked-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-16 13:33:23 -08:00
..
Kconfig ieee1394: remove the old IEEE 1394 driver stack 2010-10-11 14:48:03 +02:00
Makefile ieee1394: move init_ohci1394_dma to drivers/firewire/ 2010-10-11 14:48:03 +02:00
core-card.c Merge firewire branches to be released post v2.6.35 2010-08-02 10:09:04 +02:00
core-cdev.c Merge firewire branches to be released post v2.6.35 2010-08-02 10:09:04 +02:00
core-device.c Merge firewire branches to be released post v2.6.35 2010-08-02 10:09:04 +02:00
core-iso.c Merge firewire branches to be released post v2.6.35 2010-08-02 10:09:04 +02:00
core-topology.c firewire: core: fix fw_send_request kerneldoc comment 2010-07-13 09:47:47 +02:00
core-transaction.c firewire: core: do not use del_timer_sync() in interrupt context 2010-08-19 20:28:25 +02:00
core.h firewire: add isochronous multichannel reception 2010-07-29 23:09:18 +02:00
init_ohci1394_dma.c ieee1394: move init_ohci1394_dma to drivers/firewire/ 2010-10-11 14:48:03 +02:00
net.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-09-09 22:27:33 -07:00
nosy-user.h firewire: nosy: endianess fixes and annotations 2010-07-27 11:04:11 +02:00
nosy.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
nosy.h firewire: nosy: misc cleanups 2010-07-27 11:04:10 +02:00
ohci.c firewire: ohci: fix race when reading count in AR descriptor 2010-10-30 23:37:20 +02:00
ohci.h firewire: ohci: fix TI TSB82AA2 regression since 2.6.35 2010-10-17 14:09:12 +02:00
sbp2.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00