[PATCH 0/2] Revert mpt2sas, mpt3sas: remove disconnected phys on topology change

[PATCH 0/2] Revert mpt2sas, mpt3sas: remove disconnected phys on topology change

[Sreekanth Reddy]

Reverting the below commit IDs

1. [PATCH 1/2] mpt2sas: Remove phys on topology change
   commit ID: 3520f9c779bed098ca76dd3fb6377264301d57ed

2. [PATCH 2/2] mpt3sas: Remove phys on topology change
   commit ID: 963ba22b90a955363644cd397b20226928eab976

Sreekanth Reddy (2):
  Revert "[SCSI] mpt2sas: Remove phys on topology change."
  Revert "[SCSI] mpt3sas: Remove phys on topology change"

 drivers/scsi/mpt2sas/mpt2sas_transport.c | 5 +----
 drivers/scsi/mpt3sas/mpt3sas_transport.c | 5 +----
 2 files changed, 2 insertions(+), 8 deletions(-)

-- 
2.0.2

[PATCH 1/2] Revert "[SCSI] mpt2sas: Remove phys on topology change."

[Sreekanth Reddy]

This reverts commit 3520f9c779bed098ca76dd3fb6377264301d57ed
("mpt2sas: Remove phys on topology change")

Reverting the previous mpt2sas drives patch changes,
since we will observe below issue

Issue:
Drives connected Enclosure/Expander will unregister with
SCSI Transport Layer, if any one remove and add expander
cable with in DMD (Device Missing Delay) time period or
even any one power-off and power-on the Enclosure with in
the DMD period.

Cc: <stable@vger.kernel.org>
Cc: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
---
 drivers/scsi/mpt2sas/mpt2sas_transport.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c
index 0d1d064..e689bf2 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_transport.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c
@@ -1006,12 +1006,9 @@ mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
 		    &mpt2sas_phy->remote_identify);
 		_transport_add_phy_to_an_existing_port(ioc, sas_node,
 		    mpt2sas_phy, mpt2sas_phy->remote_identify.sas_address);
-	} else {
+	} else
 		memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
 		    sas_identify));
-		_transport_del_phy_from_an_existing_port(ioc, sas_node,
-		    mpt2sas_phy);
-	}
 
 	if (mpt2sas_phy->phy)
 		mpt2sas_phy->phy->negotiated_linkrate =
-- 
2.0.2

[PATCH 2/2] Revert "[SCSI] mpt3sas: Remove phys on topology change"

[Sreekanth Reddy]

This reverts commit 963ba22b90a955363644cd397b20226928eab976
("mpt3sas: Remove phys on topology change")

Reverting the previous mpt3sas drives patch changes,
since we will observe below issue

Issue:
Drives connected Enclosure/Expander will unregister with
SCSI Transport Layer, if any one remove and add expander
cable with in DMD (Device Missing Delay) time period or 
even any one power-off and power-on the Enclosure with in
the DMD period.

Cc: <stable@vger.kernel.org>
Cc: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
---
 drivers/scsi/mpt3sas/mpt3sas_transport.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index d4bafaa..3637ae6 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
@@ -1003,12 +1003,9 @@ mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
 		    &mpt3sas_phy->remote_identify);
 		_transport_add_phy_to_an_existing_port(ioc, sas_node,
 		    mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address);
-	} else {
+	} else
 		memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
 		    sas_identify));
-		_transport_del_phy_from_an_existing_port(ioc, sas_node,
-		    mpt3sas_phy);
-	}
 
 	if (mpt3sas_phy->phy)
 		mpt3sas_phy->phy->negotiated_linkrate =
-- 
2.0.2

Re: [PATCH 1/2] Revert "[SCSI] mpt2sas: Remove phys on topology change."

[Tomas Henzl]

On 12/02/2014 04:28 PM, Sreekanth Reddy wrote:
> This reverts commit 3520f9c779bed098ca76dd3fb6377264301d57ed
> ("mpt2sas: Remove phys on topology change")
>
> Reverting the previous mpt2sas drives patch changes,
> since we will observe below issue
>
> Issue:
> Drives connected Enclosure/Expander will unregister with
> SCSI Transport Layer, if any one remove and add expander
> cable with in DMD (Device Missing Delay) time period or
> even any one power-off and power-on the Enclosure with in
> the DMD period.

We were not able to reproduce the issue which the original patch
should have fixed, so it's fine to remove it.

Reviewed-by: Tomas Henzl <thenzl@redhat.com>

> Cc: <stable@vger.kernel.org>
> Cc: Tomas Henzl <thenzl@redhat.com>
> Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
> ---
>  drivers/scsi/mpt2sas/mpt2sas_transport.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c
> index 0d1d064..e689bf2 100644
> --- a/drivers/scsi/mpt2sas/mpt2sas_transport.c
> +++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c
> @@ -1006,12 +1006,9 @@ mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
>  		    &mpt2sas_phy->remote_identify);
>  		_transport_add_phy_to_an_existing_port(ioc, sas_node,
>  		    mpt2sas_phy, mpt2sas_phy->remote_identify.sas_address);
> -	} else {
> +	} else
>  		memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
>  		    sas_identify));
> -		_transport_del_phy_from_an_existing_port(ioc, sas_node,
> -		    mpt2sas_phy);
> -	}
>  
>  	if (mpt2sas_phy->phy)
>  		mpt2sas_phy->phy->negotiated_linkrate =

Re: [PATCH 2/2] Revert "[SCSI] mpt3sas: Remove phys on topology change"

[Tomas Henzl]

On 12/02/2014 04:28 PM, Sreekanth Reddy wrote:
> This reverts commit 963ba22b90a955363644cd397b20226928eab976
> ("mpt3sas: Remove phys on topology change")
>
> Reverting the previous mpt3sas drives patch changes,
> since we will observe below issue
>
> Issue:
> Drives connected Enclosure/Expander will unregister with
> SCSI Transport Layer, if any one remove and add expander
> cable with in DMD (Device Missing Delay) time period or 
> even any one power-off and power-on the Enclosure with in
> the DMD period.

Reviewed-by: Tomas Henzl <thenzl@redhat.com>

>
> Cc: <stable@vger.kernel.org>
> Cc: Tomas Henzl <thenzl@redhat.com>
> Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
> ---
>  drivers/scsi/mpt3sas/mpt3sas_transport.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
> index d4bafaa..3637ae6 100644
> --- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
> +++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
> @@ -1003,12 +1003,9 @@ mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
>  		    &mpt3sas_phy->remote_identify);
>  		_transport_add_phy_to_an_existing_port(ioc, sas_node,
>  		    mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address);
> -	} else {
> +	} else
>  		memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
>  		    sas_identify));
> -		_transport_del_phy_from_an_existing_port(ioc, sas_node,
> -		    mpt3sas_phy);
> -	}
>  
>  	if (mpt3sas_phy->phy)
>  		mpt3sas_phy->phy->negotiated_linkrate =

Re: [PATCH 0/2] Revert mpt2sas, mpt3sas: remove disconnected phys on topology change

[Christoph Hellwig]

Thanks,

I've applied both patches.