kernel.git/drivers/scsi/scsi.c, branch linux-2.6.36.y

[SCSI] Fix VPD inquiry page wrapper

2010-09-16T15:48:48Z

Fix two bugs in the VPD page wrapper: - Don't return failure if the user asked for page 0 - The end of buffer check failed to account for the page header size and consequently didn't work Signed-off-by: Martin K. Petersen Cc: Stable Tree Signed-off-by: James Bottomley

[SCSI] add scsi trace core functions and put trace points

2010-04-30T17:51:10Z

Signed-off-by: Xiao Guangrong Signed-off-by: Tomohiro Kusumi Signed-off-by: Kei Tokunaga Signed-off-by: James Bottomley

scsi.c: add missing kernel-doc notation for new VPD parameters

2010-03-01T16:11:54Z

Add missing kernel-doc notation for new function parameters: Warning(drivers/scsi/scsi.c:1031): No description found for parameter 'buf' Warning(drivers/scsi/scsi.c:1031): No description found for parameter 'buf_len' Signed-off-by: Randy Dunlap Cc: James Bottomley Signed-off-by: Linus Torvalds

[SCSI] eliminate potential kmalloc failure in scsi_get_vpd_page()

2010-01-18T16:48:05Z

The best way to fix this is to eliminate the intenal kmalloc() and make the caller allocate the required amount of storage. Signed-off-by: James Bottomley

[SCSI] add queue_depth ramp up code

2009-12-04T18:00:44Z

Current FC HBA queue_depth ramp up code depends on last queue full time. The sdev already has last_queue_full_time field to track last queue full time but stored value is truncated by last four bits. So this patch updates last_queue_full_time without truncating last 4 bits to store full value and then updates its only current usages in scsi_track_queue_full to ignore last four bits to keep current usages same while also use this field in added ramp up code. Adds scsi_handle_queue_ramp_up to ramp up queue_depth on successful completion of IO. The scsi_handle_queue_ramp_up will do ramp up on all luns of a target, just same as ramp down done on all luns on a target. The ramp up is skipped in case the change_queue_depth is not supported by LLD or already reached to added max_queue_depth. Updates added max_queue_depth on every new update to default queue_depth value. The ramp up is also skipped if lapsed time since either last queue ramp up or down is less than LLD specified queue_ramp_up_period. Adds queue_ramp_up_period to sysfs but only if change_queue_depth is supported since ramp up and queue_ramp_up_period is needed only in case change_queue_depth is supported first. Initializes queue_ramp_up_period to 120HZ jiffies as initial default value, it is same as used in existing lpfc and qla2xxx. -v2 Combined all ramp code into this single patch. -v3 Moves max_queue_depth initialization after slave_configure is called from after slave_alloc calling done. Also adjusted max_queue_depth check to skip ramp up if current queue_depth is >= max_queue_depth. -v4 Changes sdev->queue_ramp_up_period unit to ms when using sysfs i/f to store or show its value. Signed-off-by: Vasu Dev Tested-by: Christof Schmitt Tested-by: Giridhar Malavali Signed-off-by: James Bottomley

[SCSI] Fix protection scsi_data_buffer leak

2009-10-02T14:46:52Z

We would leak a scsi_data_buffer if the free_list command was of the protected variety. Reported-by: Boaz Harrosh Signed-off-by: Martin K. Petersen Cc: Stable Tree Signed-off-by: James Bottomley

[SCSI] fix bugs in scsi_vpd_inquiry()

2009-08-22T22:52:23Z

Universally, SCSI functions assume the lengths fed in are those of the buffer to DMA data to, not the lengths of the data minus the header. scsi_vpd_inquiry() assumed the latter and got it wrong, so fix up all the functions to use the correct assumption (and fix a bug where INQUIRY in SCSI-2 dcannot go over 255). [jejb: Matthew posted an identical version of this at the same time I did] Signed-off-by: Matthew Wilcox Signed-off-by: James Bottomley

[SCSI] fix documentation for two functions

2009-06-08T17:23:35Z

Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: James Bottomley

[SCSI] use kmem_cache_zalloc instead of kmem_cache_alloc/memset

2009-04-03T15:16:31Z

Signed-off-by: Wei Yongjun Signed-off-by: Andrew Morton Signed-off-by: James Bottomley

[SCSI] Add VPD helper

2009-03-12T17:57:54Z

Based on prior work by Martin Petersen and James Bottomley, this patch adds a generic helper for retrieving VPD pages from SCSI devices. Signed-off-by: Matthew Wilcox Signed-off-by: James Bottomley