linux-kernel - Re: [PATCH v4 6/6] i3c: master: svc: fix random hot join failure since timeout error

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Message-ID: <20231023211028.3a4613df@xps-13>
Date:   Mon, 23 Oct 2023 21:10:28 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Frank Li <Frank.Li@....com>
Cc:     alexandre.belloni@...tlin.com, conor.culhane@...vaco.com,
        imx@...ts.linux.dev, joe@...ches.com,
        linux-i3c@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 6/6] i3c: master: svc: fix random hot join failure
 since timeout error

Hi Frank,

Frank.Li@....com wrote on Mon, 23 Oct 2023 12:16:58 -0400:

> master side report:
>   silvaco-i3c-master 44330000.i3c-master: Error condition: MSTATUS 0x020090c7, MERRWARN 0x00100000
> 
> BIT 20: TIMEOUT error
>   The module has stalled too long in a frame. This happens when:
>   - The TX FIFO or RX FIFO is not handled and the bus is stuck in the
> middle of a message,
>   - No STOP was issued and between messages,
>   - IBI manual is used and no decision was made.
>   The maximum stall period is 100 μs.
> 
> This can be considered as being just a warning as the system IRQ latency
> can easily be greater than 100us.
> 
> Fixes: dd3c52846d59 ("i3c: master: svc: Add Silvaco I3C master driver")
> Cc: stable@...r.kernel.org
> Signed-off-by: Frank Li <Frank.Li@....com>

Reviewed-by: Miquel Raynal <miquel.raynal@...tlin.com>

Thanks,
Miquèl