linux-kernel - Re: [PATCH v2 1/6] rtc: m68k: provide rtc_class

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Date:	Wed, 27 Apr 2016 09:47:56 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Helge Deller <deller@....de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Rich Felker <dalias@...c.org>,
	David Howells <dhowells@...hat.com>,
	alpha <linux-alpha@...r.kernel.org>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Parisc List <linux-parisc@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	linux-m68k <linux-m68k@...ts.linux-m68k.org>,
	RTCLINUX <rtc-linux@...glegroups.com>,
	Linux-Arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH v2 1/6] rtc: m68k: provide rtc_class_ops directly

Hi Arnd,

On Tue, Apr 26, 2016 at 11:52 PM, Arnd Bergmann <arnd@...db.de> wrote:
> The rtc-generic driver provides an architecture specific
> wrapper on top of the generic rtc_class_ops abstraction,
> and m68k has another abstraction on top, which is a bit
> silly.
>
> This changes the m68k rtc-generic device to provide its
> rtc_class_ops directly, to reduce the number of layers
> by one.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  arch/m68k/kernel/time.c | 24 ++++++++++++++++++++++--
>  1 file changed, 22 insertions(+), 2 deletions(-)
>
> diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
> index 3857737e3958..fe35890feede 100644
> --- a/arch/m68k/kernel/time.c
> +++ b/arch/m68k/kernel/time.c
> @@ -86,7 +86,24 @@ void read_persistent_clock(struct timespec *ts)
>         }
>  }
>
> -#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
> +#if defined(CONFIG_ARCH_USES_GETTIMEOFFSET) && defined(CONFIG_RTC_DRV_GENERIC)

s/defined/IS_ENABLED/ for the modular case.

> @@ -95,7 +112,10 @@ static int __init rtc_init(void)
>         if (!mach_hwclk)
>                 return -ENODEV;
>
> -       pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
> +       /* or just call devm_rtc_device_register instead? */

I guess this comment is a bogus leftover? There's no "dev" parameter to
pass to devm_rtc_device_register() here.

> +       pdev = platform_device_register_data(NULL, "rtc-generic", -1,
> +                                            &generic_rtc_ops,
> +                                            sizeof(generic_rtc_ops));
>         return PTR_ERR_OR_ZERO(pdev);
>  }

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds