linux-kernel - Re: [PATCH v3 0/1] aacraid: Host adapter Adaptec 6405 constantly resets under high io load

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Message-ID: <ef82b344-dd7c-4b56-85d7-9f7dc361876f@grossegger.com>
Date: Sat, 2 Nov 2024 13:25:58 +0100
From: Christian Großegger <christian@...ssegger.com>
To: Dirk Tilger <dirk@...temication.com>, Sagar.Biradar@...rochip.com
Cc: james.hilliard1@...il.com, martin.petersen@...cle.com,
 khorenko@...tuozzo.com, aacraid@...rosemi.com, Don.Brace@...rochip.com,
 Tom.White@...rochip.com, linux-scsi@...r.kernel.org,
 linux-kernel@...r.kernel.org, Gilbert.Wu@...rochip.com
Subject: Re: [PATCH v3 0/1] aacraid: Host adapter Adaptec 6405 constantly
 resets under high io load

On October 30, 2024, at 16:01, Dirk Tilger wrote:
> I had set "msi" to "2" and the problem persisted. I have not tested
> msi=1 but as far as I understand it should have the same effect with
> regards to the system hangs.

Hi,

Yes, as far as I understand, setting msi is not enough, because when I 
look at the code the host->can_queue variable is set to the wrong value 
for the Series-6 Card since Commit 395e5df79a95 ("scsi: aacraid: Remove 
reference to Series-9").

Before the patch the driver uses the lower 16 bits of status[3] as the 
maximum number of outstanding FIBs allowed by the Series-6 controller. 
After the patch is uses the upper 16 bits of status[3]. (comminit.c:581)

Kind regards,
Christian