linux-kernel - Re: [PATCH] rtc-cmos: fix broken NVRAM bank 2 writing

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Message-Id: <20111122151605.827702bf.akpm@linux-foundation.org>
Date:	Tue, 22 Nov 2011 15:16:05 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ondrej Zary <linux@...nbow-software.org>
Cc:	Alessandro Zummo <a.zummo@...ertech.it>,
	rtc-linux@...glegroups.com,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] rtc-cmos: fix broken NVRAM bank 2 writing

On Sun, 13 Nov 2011 23:20:31 +0100
Ondrej Zary <linux@...nbow-software.org> wrote:

> Fix writing to NVRAM bank 2 in rtc-cmos driver. It never worked since its
> introduction in 2.6.28 because of a typo.
> 
> Signed-off-by: Ondrej Zary <linux@...nbow-software.org>
> 
> --- linux-3.1-orig/drivers/rtc/rtc-cmos.c	2011-10-24 09:10:05.000000000 +0200
> +++ linux-3.1/drivers/rtc/rtc-cmos.c	2011-11-08 17:43:29.000000000 +0100
> @@ -164,7 +164,7 @@ static inline unsigned char cmos_read_ba
>  static inline void cmos_write_bank2(unsigned char val, unsigned char addr)
>  {
>  	outb(addr, RTC_PORT(2));
> -	outb(val, RTC_PORT(2));
> +	outb(val, RTC_PORT(3));
>  }
>  
>  #else

Strange.  Can you suggest why this bug has lived for so long without anyone
noticing it?
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