On Thu, Feb 26, 2015 at 09:23:50PM -0500, Joshua Kinard wrote:
> This modifies the IP32 (SGI O2) platform and reset code to utilize the new
> rtc-ds1685 driver. The old mc146818rtc.h header is removed and ip32_defconfig
> is updated as well.
In general - good cleanup. But:
> index 511e9ff..ec9eb7f 100644
> --- a/arch/mips/sgi-ip32/ip32-platform.c
> +++ b/arch/mips/sgi-ip32/ip32-platform.c
[...]
> MODULE_AUTHOR("Ralf Baechle <r...@linux-mips.org>");
> MODULE_LICENSE("GPL");
> -MODULE_DESCRIPTION("8250 UART probe driver for SGI IP32 aka O2");
> +MODULE_DESCRIPTION("IP32 platform setup for SGI IP32 aka O2");
This isn't even a kernel module so I've just nuked all these MODULE_*
calls.
> diff --git a/arch/mips/sgi-ip32/ip32-reset.c b/arch/mips/sgi-ip32/ip32-reset.c
> index 44b3470..ef21706 100644
> --- a/arch/mips/sgi-ip32/ip32-reset.c
> +++ b/arch/mips/sgi-ip32/ip32-reset.c
[...]
> -static void ip32_machine_restart(char *cmd)
> +static __noreturn void ip32_poweroff(void *data)
> {
> - crime->control = CRIME_CONTROL_HARD_RESET;
> - while (1);
> -}
> + void (*poweroff_func)(struct platform_device *) =
> + symbol_get(ds1685_rtc_poweroff);
> +
> +#ifdef CONFIG_MODULES
> + /* If the first __symbol_get failed, our module wasn't loaded. */
> + if (!poweroff_func) {
> + request_module("rtc-ds1685");
> + poweroff_func = symbol_get(ds1685_rtc_poweroff);
> + }
> +#endif
symbol_get() calls are high on my list of items that indicate a piece of
code is probably ill-structured.
While RTCs often deal with power the RTC really only wants to deal with
time and so power stuff should rather go elsewhere. I suggest to take a
look at drivers/power/reset/. A small driver there could set pm_power_off
approriately. drivers/power/reset/restart-poweroff.c is a very compact
example.
> - shuting_down = 1;
> + shutting_down = 1;
I'm amazed nobody of the church of speel patchology has caught this earlier.
> @@ -190,15 +141,12 @@ static __init int ip32_reboot_setup(void)
>
> _machine_restart = ip32_machine_restart;
> _machine_halt = ip32_machine_halt;
> - pm_power_off = ip32_machine_power_off;
> + pm_power_off = ip32_machine_halt;
So halt and power_off no do the same?
Ralf
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