linux-kernel - Re: [PATCH] m68k: mvme: Remove overdue #warnings in RTC handling

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Date:   Tue, 7 Sep 2021 21:13:02 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     linux-m68k@...ts.linux-m68k.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] m68k: mvme: Remove overdue #warnings in RTC handling

On Tue, Sep 07, 2021 at 02:45:11PM +0200, Geert Uytterhoeven wrote:
> The warnings were introduced when converting the MVME147 and MVME16x
> RTC handling from gettod to hwclk.  Replace the #warning by a comment,
> and return an error to inform the upper layer that writing to the RTC is
> not yet supported.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  arch/m68k/mvme147/config.c | 4 +++-
>  arch/m68k/mvme16x/config.c | 4 +++-
>  2 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c
> index e1e90c49a49624cc..dfd6202fd403e92b 100644
> --- a/arch/m68k/mvme147/config.c
> +++ b/arch/m68k/mvme147/config.c
> @@ -171,7 +171,6 @@ static int bcd2int (unsigned char b)
>  
>  int mvme147_hwclk(int op, struct rtc_time *t)
>  {
> -#warning check me!
>  	if (!op) {
>  		m147_rtc->ctrl = RTC_READ;
>  		t->tm_year = bcd2int (m147_rtc->bcd_year);
> @@ -183,6 +182,9 @@ int mvme147_hwclk(int op, struct rtc_time *t)
>  		m147_rtc->ctrl = 0;
>  		if (t->tm_year < 70)
>  			t->tm_year += 100;
> +	} else {
> +		/* FIXME Setting the time is not yet supported */
> +		return -EOPNOTSUPP;
>  	}
>  	return 0;
>  }
> diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c
> index b59593c7cfb9dfbf..b4422c2dfbbf4f7c 100644
> --- a/arch/m68k/mvme16x/config.c
> +++ b/arch/m68k/mvme16x/config.c
> @@ -436,7 +436,6 @@ int bcd2int (unsigned char b)
>  
>  int mvme16x_hwclk(int op, struct rtc_time *t)
>  {
> -#warning check me!
>  	if (!op) {
>  		rtc->ctrl = RTC_READ;
>  		t->tm_year = bcd2int (rtc->bcd_year);
> @@ -448,6 +447,9 @@ int mvme16x_hwclk(int op, struct rtc_time *t)
>  		rtc->ctrl = 0;
>  		if (t->tm_year < 70)
>  			t->tm_year += 100;
> +	} else {
> +		/* FIXME Setting the time is not yet supported */
> +		return -EOPNOTSUPP;
>  	}
>  	return 0;
>  }
> -- 
> 2.25.1
>