linux-kernel - Re: [PATCH 5/6] i3c: master: svc: fix SDA keep low when polling IBIWON timeout happen

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Message-ID: <20231017162924.3a4b4200@xps-13>
Date:   Tue, 17 Oct 2023 16:29:24 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Frank Li <Frank.Li@....com>
Cc:     conor.culhane@...vaco.com, alexandre.belloni@...tlin.com,
        joe@...ches.com, linux-i3c@...ts.infradead.org,
        linux-kernel@...r.kernel.org, imx@...ts.linux.dev
Subject: Re: [PATCH 5/6] i3c: master: svc: fix SDA keep low when polling
 IBIWON timeout happen

Hi Frank,

Frank.Li@....com wrote on Mon, 16 Oct 2023 11:32:31 -0400:

> Need call svc_i3c_master_emit_stop() release bus.

Can you please elaborate this commit message please?

> Fixes: dd3c52846d59 ("i3c: master: svc: Add Silvaco I3C master driver")
> Cc: stable@...r.kernel.org
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  drivers/i3c/master/svc-i3c-master.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
> index 5ab68d6e439d..5bca369d6912 100644
> --- a/drivers/i3c/master/svc-i3c-master.c
> +++ b/drivers/i3c/master/svc-i3c-master.c
> @@ -403,6 +403,7 @@ static void svc_i3c_master_ibi_work(struct work_struct *work)
>  					 SVC_I3C_MSTATUS_IBIWON(val), 0, 1000);
>  	if (ret) {
>  		dev_err(master->dev, "Timeout when polling for IBIWON\n");
> +		svc_i3c_master_emit_stop(master);
>  		goto reenable_ibis;
>  	}
>  


Thanks,
Miquèl