linux/drivers/scsi/ibmmca.c, branch v2.6.39-rc2

SCSI host lock push-down

2010-11-16T21:33:23Z

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 Acked-by: James Bottomley Signed-off-by: Linus Torvalds

[SCSI] ibmmca: fix buffer overflow

2010-01-18T16:48:08Z

Allows i == IM_MAX_HOSTS, which is out of range. Signed-off-by: Roel Kluin Signed-off-by: Andrew Morton Signed-off-by: James Bottomley

[SCSI] Clean up my email address and use a single standard address for everything

2008-12-29T17:24:12Z

Signed-off-by: Alan Cox Signed-off-by: James Bottomley

[SCSI] remove use_sg_chaining

2008-01-30T19:14:02Z

With the sg table code, every SCSI driver is now either chain capable or broken (or has sg_tablesize set so chaining is never activated), so there's no need to have a check in the host template. Also tidy up the code by moving the scatterlist size defines into the SCSI includes and permit the last entry of the scatterlist pools not to be a power of two. Signed-off-by: James Bottomley

[SG] Update drivers to use sg helpers

2007-10-22T19:19:53Z

Signed-off-by: Jens Axboe

[SCSI] add use_sg_chaining option to scsi_host_template

2007-10-16T09:24:32Z

This option is true if a low-level driver can support sg chaining. This will be removed eventually when all the drivers are converted to support sg chaining. q->max_phys_segments is set to SCSI_MAX_SG_SEGMENTS if false. Signed-off-by: FUJITA Tomonori Signed-off-by: Jens Axboe

[SCSI] ibmmca: Remove dead references to MODULE_PARM macro

2007-10-12T18:54:17Z

Remove the useless references to the obsolete MODULE_PARM macro. Signed-off-by: Robert P. J. Day Signed-off-by: Andrew Morton Signed-off-by: James Bottomley

[SCSI] ibmmca: Stop leaking scsi_hosts on exit

2007-10-12T18:51:10Z

There was a missing call to scsi_host_put() causing us to leak a scsi host every time this module was unloaded. Signed-off-by: Matthew Wilcox Signed-off-by: James Bottomley

[SCSI] ibmmca: convert to use the data buffer accessors

2007-05-26T21:30:17Z

- remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori Signed-off-by: James Bottomley

[SCSI] ibmmca: convert to new probing API and fix oopses

2007-05-22T15:39:08Z

This is basically a straight conversion. I have one of these things, so I know it works ... my problem is that it has a wierd SCA like connector, so I can't connect anything to it (no cables). However, previously it panic'd in the interrupt, now it completes a bus scan. Signed-off-by: James Bottomley