linux-toradex.git/drivers/scsi/snic, branch v4.10

scsi: snic: Return error code on memory allocation failure

2017-01-06T01:45:42+00:00

If a call to mempool_create_slab_pool() in snic_probe() returns NULL,
return -ENOMEM to indicate failure. mempool_creat_slab_pool() only fails
if it cannot allocate memory.

https://bugzilla.kernel.org/show_bug.cgi?id=189061

Reported-by: bianpan2010@ruc.edu.cn
Signed-off-by: Burak Ok 
Signed-off-by: Andreas Schaertl 
Acked-by: Narsimhulu Musini 
Reviewed-by: Ewan D. Milne 
Signed-off-by: Martin K. Petersen

snic: Fix use-after-free in case of a dma mapping error

2016-07-13T03:16:31+00:00

If there is a dma mapping error snic kfree()s buf right before printing
it.  Change the order to not accidently trip on memory that's not owned
by us anymore.

Signed-off-by: Johannes Thumshirn 
Acked-by: Narsimhulu Musini 
Reviewed-by: Laurence Oberman 
Signed-off-by: Martin K. Petersen

snic: fix typo

2016-07-13T03:16:31+00:00

firmare -> firmware

Signed-off-by: Julia Lawall 
Signed-off-by: Martin K. Petersen

snic: add scsi host after determining max IOs.

2016-04-11T20:57:09+00:00

scsi host is added after negotiating the max number of IOs with
Firmware.

Signed-off-by: Narsimhulu Musini 
Signed-off-by: Sesidhar Baddela 
Signed-off-by: Martin K. Petersen

snic: Fixing race in the hba reset and IO/TM completion

2016-04-11T20:57:09+00:00

While HBA reset is in progress, if IO/TM completion is received for the
same IO then IO/TM completion path releases the driver private resources
associated with IO. This fix prevents releasing the resources in
IO and TM completion path if HBA reset is in progress.

Signed-off-by: Narsimhulu Musini 
Signed-off-by: Sesidhar Baddela 
Signed-off-by: Martin K. Petersen

snic: Fix for missing interrupts

2016-04-11T20:57:09+00:00

- On posting an IO to the firmware, adapter generates an interrupt.
  Due to hardware issues, sometimes the adapter fails to generate
  the interrupt. This behavior skips updating transmit queue-
  counters, which in turn causes the queue full condition. The fix
  addresses the queue full condition.

- The fix also reserves a slot in transmit queue for hba reset.
  when queue full is observed during IO, there will always be room
  to post hba reset command.

Signed-off-by: Narsimhulu Musini 
Signed-off-by: Sesidhar Baddela 
Signed-off-by: Martin K. Petersen

snic: target cleanup in driver unload path

2016-04-11T20:57:09+00:00

Fix deletes the snic targets synchronously prior to deletion of host.

Signed-off-by: Narsimhulu Musini 
Signed-off-by: Sesidhar Baddela 
Signed-off-by: Martin K. Petersen

snic: Handling control path queue issues

2016-04-11T20:57:09+00:00

Fix handles control path queue issues such as queue full and sudden
removal of hardware.

Signed-off-by: Narsimhulu Musini 
Signed-off-by: Sesidhar Baddela 
Signed-off-by: Martin K. Petersen

snic: LUN goes offline due to scsi cmd timeouts

2016-04-11T20:57:09+00:00

- LUN goes offline if there are at least two scsi command timeouts
  Completing the IO with scsi_done() fixes the issue.

Signed-off-by: Narsimhulu Musini 
Signed-off-by: Sesidhar Baddela 
Signed-off-by: Martin K. Petersen

snic: Added additional stats

2016-04-11T20:57:09+00:00

Adding additional stats, and fixed logging messages.
- Added qdepth change stats
- Added separate isr stats for each type of interrupt
- Fixed race in updating active IOs
- Suppressed Link event message for DAS backend.

Signed-off-by: Narsimhulu Musini 
Signed-off-by: Sesidhar Baddela 
Signed-off-by: Martin K. Petersen