user/sven/linux.git/drivers/message/fusion, branch v4.4.4

Merge tag '4.4-scsi-mkp' into misc

2015-11-12T12:06:18Z

SCSI queue for 4.4. Signed-off-by: Martin K. Petersen

mptfusion: don't allow negative bytes in kbuf_alloc_2_sgl()

2015-11-12T01:58:06Z

There is a static checker warning here because "bytes" is controlled by the user and we cap the upper bound with min() but allow negatives. Negative bytes will result in some nasty warning messages but are not super harmful. Anyway, no one needs negative bytes so let's just check for it and return NULL. Signed-off-by: Dan Carpenter Signed-off-by: Martin K. Petersen

scsi: use host wide tags by default

2015-11-10T01:11:57Z

This patch changes the !blk-mq path to the same defaults as the blk-mq I/O path by always enabling block tagging, and always using host wide tags. We've had blk-mq available for a few releases so bugs with this mode should have been ironed out, and this ensures we get better coverage of over tagging setup over different configs. Signed-off-by: Christoph Hellwig Acked-by: Jens Axboe Reviewed-by: Hannes Reinecke Signed-off-by: James Bottomley

mptfusion: prevent some memory corruption

2015-08-26T14:11:45Z

These are signed values the come from the user, we put a cap on the upper bounds but not on the lower bounds. We use "karg.dataSgeOffset" to calculate "sz". We verify "sz" and proceed as if that means that "karg.dataSgeOffset" is correct but this fails to consider that the "sz" calculations can have integer overflows. Signed-off-by: Dan Carpenter Reviewed-by: Johannes Thumshirn Signed-off-by: James Bottomley

fusion: remove dead MTRR code

2015-06-13T15:44:14Z

If and when this gets enabled the driver could should split up IO memory space properly and that is quite a bit of work. Just remove the uncommented dead MTRR code then. There are a few motivations for this: a) Take advantage of PAT when available b) Help bury MTRR code away, MTRR is architecture specific and on x86 its replaced by PAT c) Help with the goal of eventually using _PAGE_CACHE_UC over _PAGE_CACHE_UC_MINUS on x86 on ioremap_nocache() (see commit de33c442e titled "x86 PAT: fix performance drop for glx, use UC minus for ioremap(), ioremap_nocache() and pci_mmap_page_range()") Signed-off-by: Luis R. Rodriguez Acked-by: Sreekanth Reddy Signed-off-by: James Bottomley

mptsas: fix depth param in scsi_track_queue_full

2015-06-13T15:40:33Z

A user of scsi_track_queue_full should pass to the function a constant value untill the queue-depth changes, otherwise the internal logic in scsi_track_queue_full rejects the change. Other users of this function use a 'sdev->queue_depth - 1' as depth parameter, let's do the same. Signed-off-by: Tomas Henzl Acked-by: "Sreekanth Reddy" Signed-off-by: James Bottomley

scsi: drop reason argument from ->change_queue_depth

2014-11-24T13:45:27Z

Drop the now unused reason argument from the ->change_queue_depth method. Also add a return value to scsi_adjust_queue_depth, and rename it to scsi_change_queue_depth now that it can be used as the default ->change_queue_depth implementation. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke

scsi: don't set tagging state from scsi_adjust_queue_depth

2014-11-12T10:19:43Z

Remove the tagged argument from scsi_adjust_queue_depth, and just let it handle the queue depth. For most drivers those two are fairly separate, given that most modern drivers don't care about the SCSI "tagged" status of a command at all, and many old drivers allow queuing of multiple untagged commands in the driver. Instead we start out with the ->simple_tags flag set before calling ->slave_configure, which is how all drivers actually looking at ->simple_tags except for one worke anyway. The one other case looks broken, but I've kept the behavior as-is for now. Except for that we only change ->simple_tags from the ->change_queue_type, and when rejecting a tag message in a single driver, so keeping this churn out of scsi_adjust_queue_depth is a clear win. Now that the usage of scsi_adjust_queue_depth is more obvious we can also remove all the trivial instances in ->slave_alloc or ->slave_configure that just set it to the cmd_per_lun default. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke Reviewed-by: Martin K. Petersen

scsi: always assign block layer tags if enabled

2014-11-12T10:19:43Z

Allow a driver to ask for block layer tags by setting .use_blk_tags in the host template, in which case it will always see a valid value in request->tag, similar to the behavior when using blk-mq. This means even SCSI "untagged" commands will now have a tag, which is especially useful when using a host-wide tag map. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke

mptfusion: don't change queue type in ->change_queue_depth

2014-11-12T10:19:42Z

This function shouldn't change the queue type, just the depth. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke