On Fri, 02 Nov 2018 19:12:44 +0100,
Andy Shevchenko wrote:
>
> > + if (action == HDA_FIXUP_ACT_PROBE) {
> > + if (!huawei_wmi_micmute_led_set_func)
> > + huawei_wmi_micmute_led_set_func =
> > symbol_request(huawei_wmi_micmute_led_set);
> > + if (!huawei_wmi_micmute_led_set_func) {
> > + codec_warn(codec, "Failed to find huawei_wmi symbol
> > huawei_wmi_micmute_led_set\n");
> > + return;
> > + }
> > + removefunc = (huawei_wmi_micmute_led_set_func(false) < 0)
> > + || (snd_hda_gen_add_micmute_led(codec,
> > update_huawei_wmi_micmute_led) < 0);
> > +
> > + }
> > +
> > + if (huawei_wmi_micmute_led_set_func && (action ==
> > HDA_FIXUP_ACT_FREE || removefunc)) {
> > + symbol_put(huawei_wmi_micmute_led_set);
> > + huawei_wmi_micmute_led_set_func = NULL;
> > + }
> > +}
>
> Takashi, is it a way how the rest sound drivers are written? B/c this
> symbol_request(s) look to me a bit ugly.
It's a workaround for not having a hard dependency. The HD-audio
codec driver is generic, and we don't want to load the multiple WMI
drivers always for using a Realtek codec.
Ugly, yes, but simple enough.
thanks,
Takashi
