From: "Peter Wang (王信友)" <peter.wang@mediatek.com>
To: "sh043.lee@samsung.com" <sh043.lee@samsung.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"bvanassche@acm.org" <bvanassche@acm.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>
Subject: Re: [PATCH] UFS: Make TM command timeout configurable from host side
Date: Tue, 18 Nov 2025 05:55:49 +0000 [thread overview]
Message-ID: <a89ccf64710deeadfce9cba08e28867f88463c77.camel@mediatek.com> (raw)
In-Reply-To: <e3dcb711-990d-4e4e-a128-8a0cd0ce8886@acm.org>
On Mon, 2025-11-17 at 08:43 -0800, Bart Van Assche wrote:
>
> There are no other SCSI drivers I know of that have a retry loop
> around
> the code that submits task management functions. I propose to reduce
> the
> retry count in this function from 100 to 1.
>
> Thanks,
>
> Bart.
Hi Bart and Seunghui,
Sorry, after thinking it through, under normal circumstances
it usually only loops once, so changing it to 30 is fine.
However, in extreme cases, it’s possible that after a 30-second
timeout, the device just send a response, and at the same time,
when the host receives the response, the IRQ is pending by system.
(other irq is executing or spin_lock_irq, etc)
So I suggest not changing this value, since it doesn’t affect
the normal execution time. But in extreme cases, it could indeed
fix an error.
Thanks
Peter
next prev parent reply other threads:[~2025-11-18 5:55 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20251106012702epcas1p28fdeed020ea44f18dcc751c283fbbcc2@epcas1p2.samsung.com>
2025-11-06 1:26 ` [PATCH] UFS: Make TM command timeout configurable from host side Seunghui Lee
2025-11-11 2:46 ` Peter Wang (王信友)
2025-11-11 8:44 ` Seunghui Lee
2025-11-11 9:03 ` Peter Wang (王信友)
2025-11-11 16:37 ` Bart Van Assche
2025-11-12 2:58 ` Peter Wang (王信友)
2025-11-12 8:49 ` Seunghui Lee
2025-11-12 9:42 ` Peter Wang (王信友)
2025-11-12 16:51 ` Bart Van Assche
2025-11-13 10:08 ` Peter Wang (王信友)
2025-11-17 7:11 ` Seunghui Lee
2025-11-17 8:40 ` Peter Wang (王信友)
2025-11-17 9:48 ` Seunghui Lee
2025-11-18 5:48 ` Peter Wang (王信友)
2025-11-17 16:43 ` Bart Van Assche
2025-11-18 5:55 ` Peter Wang (王信友) [this message]
2025-11-18 17:31 ` Bart Van Assche
2025-11-19 9:20 ` Peter Wang (王信友)
2025-11-17 16:40 ` Bart Van Assche
2025-11-18 5:52 ` Peter Wang (王信友)
2025-11-11 16:38 ` Bart Van Assche
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