linux-kernel - Re: [PATCH v2 3/4] i2c: highlander: Use proper printk format for iomem pointer

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Date:   Wed, 15 Jan 2020 18:43:37 +0100
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Vladimir Zapolskiy <vz@...ia.com>,
        Sylvain Lemieux <slemieux.tyco@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd@...db.de>, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Jean Delvare <jdelvare@...e.de>,
        Jarkko Nikula <jarkko.nikula@...ux.intel.com>
Subject: Re: [PATCH v2 3/4] i2c: highlander: Use proper printk format for
 iomem pointer

On Tue, Jan 14, 2020 at 10:06:04AM +0100, Krzysztof Kozlowski wrote:
> iomem pointers should be printed with pointer format to hide the
> actual value and fix warnings when compiling on 64-bit platform (e.g. with
> COMPILE_TEST):
> 
>     drivers/i2c/busses/i2c-highlander.c: In function ‘highlander_i2c_smbus_xfer’:
>     drivers/i2c/busses/i2c-highlander.c:325:22: warning:
>         format ‘%d’ expects argument of type ‘int’,
>         but argument 3 has type ‘size_t {aka long unsigned int}’ [-Wformat=]
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

Wrong commit message. buf_len is size_t and not an iomem pointer.

> ---
> 
> Changes since v1:
> 1. None
> ---
>  drivers/i2c/busses/i2c-highlander.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/i2c/busses/i2c-highlander.c b/drivers/i2c/busses/i2c-highlander.c
> index abfe3094c047..803dad70e2a7 100644
> --- a/drivers/i2c/busses/i2c-highlander.c
> +++ b/drivers/i2c/busses/i2c-highlander.c
> @@ -322,7 +322,7 @@ static int highlander_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr,
>  		tmp |= (SMMR_MODE0 | SMMR_MODE1);
>  		break;
>  	default:
> -		dev_err(dev->dev, "unsupported xfer size %d\n", dev->buf_len);
> +		dev_err(dev->dev, "unsupported xfer size %zu\n", dev->buf_len);
>  		return -EINVAL;
>  	}
>  
> -- 
> 2.7.4
> 

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