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>
There was commented out transfer_flags initialization.
And i think memset should fill entire structure, not only length of
pointer to it.
This makes the driver work properly now on my hardware.
Signed-off-by: Konstantin Katuev <kkatuev@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The usb tree renamed the USB storage defines to make more sense, so this
driver needs the changes as well so that things will compile properly.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Now that we aren't using the rc_lock variable, delete it to keep gcc
happy and not complaining about it.
Cc: Al Cho <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The other part of keucr lost usb disconnect.
Unplug SDcard after thread scan,the wrong rule in usb_stor_port_reset,
so the driver still fail in stress test.
Signed-off-by: Al Cho <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
As there are symbols that conflict with the in-kernel usb-storage
module, we can't build this into the kernel.
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Al Cho <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
keucr lost the disconnect,
so keucr crash when plug-in and then plug-out SD-card quickly.
unmark the part of usb disconnect
Signed-off-by: Al Cho <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
keucr driver has a build error when CONFIG_PM is not enabled, so fix that.
drivers/staging/keucr/usb.c:42: error: 'struct us_data' has no member named 'suspend_resume_hook'
drivers/staging/keucr/usb.c:43: error: 'struct us_data' has no member named 'suspend_resume_hook'
drivers/staging/keucr/usb.c:64: error: 'struct us_data' has no member named 'suspend_resume_hook'
drivers/staging/keucr/usb.c:65: error: 'struct us_data' has no member named 'suspend_resume_hook'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Al Cho <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Update keucr TODO with additional work items.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Al Cho <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This resolves a few of the coding style issues in the .h files
for this driver. It doesn't get all of them by far, but it's a
good start.
Cc: Al Cho <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This driver is for the ENE card reader that can be found in many
different laptops. It was written by ENE, but cleaned up to
work properly in the kernel tree by Novell.
Signed-off-by: Al Cho <acho@novell.com>
Cc: <yiyingc@ene.com.tw>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jeff Garzik