linux-kernel - Re: [PATCH] cxl/mbox: Add debug messages for supported mailbox commands

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Message-ID: <20230123140934.000066ff@Huawei.com>
Date:   Mon, 23 Jan 2023 14:09:34 +0000
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Robert Richter <rrichter@....com>
CC:     Alison Schofield <alison.schofield@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Ben Widawsky <bwidawsk@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cxl/mbox: Add debug messages for supported mailbox
 commands

On Thu, 19 Jan 2023 14:04:50 +0100
Robert Richter <rrichter@....com> wrote:

> Only unsupported mailbox commands are reported in debug messages. A
> list of supported commands is useful too. Change debug messages to
> also report the opcodes of supported commands.
> 
> On that occasion also add missing trailing newlines.
> 
> Signed-off-by: Robert Richter <rrichter@....com>
Seems reasonable to me.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> ---
>  drivers/cxl/core/mbox.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
> index a48ade466d6a..ffa9f84c2dce 100644
> --- a/drivers/cxl/core/mbox.c
> +++ b/drivers/cxl/core/mbox.c
> @@ -629,11 +629,12 @@ static void cxl_walk_cel(struct cxl_dev_state *cxlds, size_t size, u8 *cel)
>  
>  		if (!cmd) {
>  			dev_dbg(cxlds->dev,
> -				"Opcode 0x%04x unsupported by driver", opcode);
> +				"Opcode 0x%04x unsupported by driver\n", opcode);
>  			continue;
>  		}
>  
>  		set_bit(cmd->info.id, cxlds->enabled_cmds);
> +		dev_dbg(cxlds->dev, "Opcode 0x%04x supported by driver\n", opcode);
>  	}
>  }
>  
> 
> base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2