linux-kernel - Re: [PATCH 4/6] MIPS: SGI-IP27: fix readb/writeb addressing

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Message-ID: <20190408145834.GO7480@piout.net>
Date:   Mon, 8 Apr 2019 16:58:34 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Thomas Bogendoerfer <tbogendoerfer@...e.de>
Cc:     Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        netdev@...r.kernel.org, linux-rtc@...r.kernel.org,
        linux-serial@...r.kernel.org
Subject: Re: [PATCH 4/6] MIPS: SGI-IP27: fix readb/writeb addressing

On 08/04/2019 16:20:56+0200, Thomas Bogendoerfer wrote:
> diff --git a/drivers/rtc/rtc-m48t35.c b/drivers/rtc/rtc-m48t35.c
> index 0cf6507de3c7..05f0d91366af 100644
> --- a/drivers/rtc/rtc-m48t35.c
> +++ b/drivers/rtc/rtc-m48t35.c
> @@ -24,6 +24,16 @@
>  
>  struct m48t35_rtc {
>  	u8	pad[0x7ff8];    /* starts at 0x7ff8 */
> +#ifdef CONFIG_SGI_IP27
> +	u8	hour;
> +	u8	min;
> +	u8	sec;
> +	u8	control;
> +	u8	year;
> +	u8	month;
> +	u8	date;
> +	u8	day;
> +#else

I'm not sure why the RTC driver has to know about that. Shouldn't your
accessors be fixing that?


-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com