Re: [PATCH 2/3] thinkpad_acpi: Don't repeat ourselves in hotkey_init_tablet_mode()

[Henrique de Moraes Holschuh <hmh-N3TV7GIv+o9fyO9Q7EP/yw@public.gmane.org>]

On Mon, 07 Nov 2016, Lyude wrote:
> There's no need to have multiple copies of the logic we use for checking
> whether or not we're in tablet mode, so just use
> hotkey_get_tablet_mode() when checking the initial state in
> hotkey_init_tablet_mode().

...

> @@ -3130,13 +3130,16 @@ hotkey_init_tablet_mode(void)
>  	/* For X41t, X60t, X61t Tablets... */
>  	if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
>  		tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
> -		in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
>  		type = "MHKG";
>  	}
>  
>  	if (!tp_features.hotkey_tablet)
>  		return 0;
>  
> +	res = hotkey_get_tablet_mode(&in_tablet_mode);
> +	if (res)
> +		return res;
> +

Won't this way of doing things cause the ACPI methods to be called
twice in a row?

The hotkey_init_tablet_mode() code does mode detection, and thus
hotkey_get_tablet_mode() must be kept in sync with it *anyway* (and not
the opposite), so it doesn't look like a very relevant maintenance
burden...

-- 
  Henrique Holschuh

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