kernel.git/drivers/ata/libata-eh.c, branch linux-4.7.y

Merge remote-tracking branch 'mkp-scsi/4.7/scsi-fixes' into fixes

2016-06-18T18:59:01Z

scsi: fix race between simultaneous decrements of ->host_failed

2016-06-09T03:08:04Z

sas_ata_strategy_handler() adds the works of the ata error handler to system_unbound_wq. This workqueue asynchronously runs work items, so the ata error handler will be performed concurrently on different CPUs. In this case, ->host_failed will be decreased simultaneously in scsi_eh_finish_cmd() on different CPUs, and become abnormal. It will lead to permanently inequality between ->host_failed and ->host_busy, and scsi error handler thread won't start running. IO errors after that won't be handled. Since all scmds must have been handled in the strategy handler, just remove the decrement in scsi_eh_finish_cmd() and zero ->host_busy after the strategy handler to fix this race. Fixes: 50824d6c5657 ("[SCSI] libsas: async ata-eh") Cc: stable@vger.kernel.org Signed-off-by: Wei Fang Reviewed-by: James Bottomley Signed-off-by: Martin K. Petersen

libata: Implement ZBC OUT translation

2016-05-09T16:36:46Z

ZAC drives implement a 'ZAC Management Out' command template, which maps onto the ZBC OUT command. Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo

libata: implement ZBC IN translation

2016-05-09T16:36:46Z

ZAC drives implement a 'ZAC Management In' command template, which maps onto the ZBC IN command. Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo

libata: do not attempt to retrieve sense code twice

2016-05-09T16:36:44Z

Do not call ata_request_sense() if the sense code is already present. Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo

libata: Implement control mode page to select sense format

2016-04-04T16:07:41Z

Implement MODE SELECT for the control mode page to allow the OS to switch to descriptor sense. tj: Dropped s/sb/cmd->sense_buffer/ in ata_gen_ata_sense(). Added @dev description to ata_msense_ctl_mode(). Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo

libata: evaluate SCSI sense code

2016-04-04T16:07:41Z

Whenever a sense code is set it would need to be evaluated to update the error mask. tj: Cosmetic formatting updates. Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo

libata-eh: Set 'information' field for autosense

2016-04-04T16:07:41Z

If NCQ autosense or the sense data reporting feature is enabled the LBA of the offending command should be stored in the sense data 'information' field. tj: s/(u64)-1/U64_MAX/ Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo

libata: Implement support for sense data reporting

2016-04-04T16:07:40Z

ACS-4 defines a sense data reporting feature set. This patch implements support for it. tj: Cosmetic formatting updates. Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo

libata: Implement NCQ autosense

2016-04-04T16:07:40Z

Some newer devices support NCQ autosense (cf ACS-4), so we should be using it to retrieve the sense code and speed up recovery. Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo