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scsi: mpt3sas: Unblock device after controller reset

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While issuing any ATA passthrough command to firmware the driver will
block the device. But it will unblock the device only if the I/O
completes through the ISR path. If a controller reset occurs before
command completion the device will remain in blocked state.

Make sure we unblock the device following a controller reset if an ATA
passthrough command was queued.

[mkp: clarified patch description]

Cc: <stable@vger.kernel.org> # v4.4+
Fixes: ac6c2a93bd07 ("mpt3sas: Fix for SATA drive in blocked state, after diag reset")
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Suganath Prabu S 2016-11-17 16:15:58 +05:30 committed by Martin K. Petersen
parent 7630b3a599
commit 7ff723ad0f
1 changed files with 8 additions and 5 deletions
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13
drivers/scsi/mpt3sas/mpt3sas_scsih.c
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@ -3885,6 +3885,11 @@ _scsih_temp_threshold_events(struct MPT3SAS_ADAPTER *ioc,
}
}
static inline bool ata_12_16_cmd(struct scsi_cmnd *scmd)
{
return (scmd->cmnd[0] == ATA_12 || scmd->cmnd[0] == ATA_16);
}
/**
* _scsih_flush_running_cmds - completing outstanding commands.
* @ioc: per adapter object
@ -3906,6 +3911,9 @@ _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc)
if (!scmd)
continue;
count++;
if (ata_12_16_cmd(scmd))
scsi_internal_device_unblock(scmd->device,
SDEV_RUNNING);
mpt3sas_base_free_smid(ioc, smid);
scsi_dma_unmap(scmd);
if (ioc->pci_error_recovery)
@ -4010,11 +4018,6 @@ _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
SAM_STAT_CHECK_CONDITION;
}
static inline bool ata_12_16_cmd(struct scsi_cmnd *scmd)
{
return (scmd->cmnd[0] == ATA_12 || scmd->cmnd[0] == ATA_16);
}
/**
* scsih_qcmd - main scsi request entry point
* @scmd: pointer to scsi command object