This is a note to let you know that I've just added the patch titled
scsi: mpt3sas: Unblock device after controller reset
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-mpt3sas-unblock-device-after-controller-reset.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7ff723ad0f87feba43dda45fdae71206063dd7d4 Mon Sep 17 00:00:00 2001
From: Suganath Prabu S <suganath-prabu.subramani@xxxxxxxxxxxx>
Date: Thu, 17 Nov 2016 16:15:58 +0530
Subject: scsi: mpt3sas: Unblock device after controller reset
From: Suganath Prabu S <suganath-prabu.subramani@xxxxxxxxxxxx>
commit 7ff723ad0f87feba43dda45fdae71206063dd7d4 upstream.
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]
Fixes: ac6c2a93bd07 ("mpt3sas: Fix for SATA drive in blocked state, after diag reset")
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@xxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -3706,6 +3706,11 @@ _scsih_temp_threshold_events(struct MPT3
}
}
+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
@@ -3727,6 +3732,9 @@ _scsih_flush_running_cmds(struct MPT3SAS
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)
@@ -3831,11 +3839,6 @@ _scsih_eedp_error_handling(struct scsi_c
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
Patches currently in stable-queue which might be from suganath-prabu.subramani@xxxxxxxxxxxx are
queue-4.4/scsi-mpt3sas-fix-secure-erase-premature-termination.patch
queue-4.4/scsi-mpt3sas-unblock-device-after-controller-reset.patch
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