linux-kernel - Re: [PATCH v1 1/1] mfd: ipaq-micro: Use %*ph for printing hexdump of a small buffer

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Message-ID: <20230621171040.GK10378@google.com>
Date:   Wed, 21 Jun 2023 18:10:40 +0100
From:   Lee Jones <lee@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/1] mfd: ipaq-micro: Use %*ph for printing hexdump of
 a small buffer

On Tue, 13 Jun 2023, Andy Shevchenko wrote:

> The kernel already has a helper to print a hexdump of a small
> buffer via pointer extension. Use that instead of open coded
> variant.

That's not all you're doing is it?

Nice try.  2 patches please.

> In long term it helps to kill pr_cont() or at least narrow down
> its use.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/mfd/ipaq-micro.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/mfd/ipaq-micro.c b/drivers/mfd/ipaq-micro.c
> index 6d3968458e81..57fb7874fc91 100644
> --- a/drivers/mfd/ipaq-micro.c
> +++ b/drivers/mfd/ipaq-micro.c
> @@ -131,10 +131,8 @@ static void micro_rx_msg(struct ipaq_micro *micro, u8 id, int len, u8 *data)
>  		break;
>  	default:
>  		dev_err(micro->dev,
> -			"unknown msg %d [%d] ", id, len);
> -		for (i = 0; i < len; ++i)
> -			pr_cont("0x%02x ", data[i]);
> -		pr_cont("\n");
> +			"unknown msg %d [%d] %*ph\n", id, len, len, data);
> +		break;
>  	}
>  	spin_unlock(&micro->lock);
>  }
> -- 
> 2.40.0.1.gaa8946217a0b
> 

-- 
Lee Jones [李琼斯]