linux-kernel - Re: [PATCH] Accessiblity: speakup: specifying the default driver parameters among the module params

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Message-ID: <20221012210148.di6qxcdproztponz@begin>
Date:   Wed, 12 Oct 2022 23:01:48 +0200
From:   Samuel Thibault <samuel.thibault@...-lyon.org>
To:     Osama Muhammad <osmtendev@...il.com>
Cc:     gregkh@...uxfoundation.org, speakup@...ux-speakup.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Accessiblity: speakup: specifying the default driver
 parameters among the module params

Hello,

Osama Muhammad, le jeu. 13 oct. 2022 01:47:23 +0500, a ecrit:
> +enum default_vars_id {
> +	DIRECT_ID = 0, CAPS_START_ID, CAPS_STOP_ID,
> +	PAUSE_ID, RATE_ID, PITCH_ID, INFLECTION_ID,
> +	VOL_ID, TONE_ID, PUNCT_ID, VOICE_ID,
> +	FREQUENCY_ID,
> +};
> +
> +
>  static struct var_t vars[] = {
>  	/* DIRECT is put first so that module_param_named can access it easily */
>  	{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
> @@ -451,10 +460,33 @@ static int softsynth_adjust(struct spk_synth *synth, struct st_var_header *var)

We need to make sure that the entries in vars are in the same order, so
use 

  	[DIRECT_ID] = { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },

etc. to make sure that the indexes are correct. Also add NB_ID as last
member of the enum, and use it for the "vars" array length, so we're
sure we're not missing anything.

>  module_param_named(start, synth_soft.startup, short, 0444);
> -module_param_named(direct, vars[0].u.n.default_val, int, 0444);
> +module_param_named(direct, vars[DIRECT_ID].u.n.default_val, int, 0444);
> +module_param_named(caps_start, vars[CAPS_START_ID].u.s.default_val, charp, 0444);
> +module_param_named(caps_stop, vars[CAPS_STOP_ID].u.s.default_val, charp, 0444);
> +module_param_named(pause, vars[PAUSE_ID].u.n.default_val, int, 0444);
> +module_param_named(rate, vars[RATE_ID].u.n.default_val, int, 0444);
> +module_param_named(pitch, vars[PITCH_ID].u.n.default_val, int, 0444);
> +module_param_named(inflection, vars[INFLECTION_ID].u.n.default_val, int, 0444);
> +module_param_named(vol, vars[VOL_ID].u.n.default_val, int, 0444);
> +module_param_named(tone, vars[TONE_ID].u.n.default_val, int, 0444);
> +module_param_named(punct, vars[PUNCT_ID].u.n.default_val, int, 0444);
> +module_param_named(voice, vars[VOICE_ID].u.n.default_val, int, 0444);
> +module_param_named(frequency, vars[FREQUENCY_ID].u.n.default_val, int, 0444);

Not all vars make sense as parameters: caps_start, caps_stop and pause
are not actually tunable, so don't add a parameter for them.

Samuel