ACK/Cmnt: [SRU][H][G][F][PATCH 0/1] scsi: mpt3sas: Only one vSES is present even when IOC has multi vSES

[Tim Gardner]

Acked-by: Tim Gardner <tim.gardner at canonical.com>

BugLink short form: https://bugs.launchpad.net/bugs/1926517

This can be fixed when the patch is applied.

On 5/26/21 1:11 PM, Michael Reed wrote:
> From: Michael Reed <Michael.Reed at canonical.com>
> 
> BugLink:  https://bugs.launchpad.net/bugs/1926517
> 
> 
> SRU Justification:
> 
> [Impact]
> Whenever the driver is adding a vSES to virtual-phys list it is
> reinitializing the list head. Hence those vSES devices which were added
> previously are lost.
> 
> [FIXES]
> 
> Stop reinitializing the list every time a new vSES device is added.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?id=4c51f9569651
> 
> CommitID: 4c51f956965120b3441cdd39c358b87daba13e19
> 
> [TESTING]
> 
> Load the mpt3sas driver on the system where Brodcom's HBA 9500 Tri-Mode Storage Adapter (IT HBA Aero/Ventura) is connected to two backplanes (so that two vSES device get configured on the HBA). After loading the driver user should able to access both the vSES devices. Also even after performing host reset operation user must able to access both the vSES devices.
> i.e. lsscsi must list both the vSES devices after loading the driver and also after performing host reset operation.
> 
> [REGRESSION RISK]
> 
> There is a low regression risk with this bug fix patch.
> 
> [Other Info]
> 
> This has been tested on 5.11, 5.8 and 5.4.  These patches cleanly cherrypicked to 5.11, 5.8 and 5.4
> 
> Sreekanth Reddy (1):
>    scsi: mpt3sas: Only one vSES is present even when IOC has multi vSES
> 
>   drivers/scsi/mpt3sas/mpt3sas_scsih.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 

-- 
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Tim Gardner
Canonical, Inc