Re: [PATCH v3 2/2] ALSA: usb-audio: Add quirk for Plantronics headsets to fix control names

[Takashi Iwai <tiwai@suse.de>]

On Tue, 14 Jan 2025 23:14:13 +0100,
Terry Junge wrote:
> 
> On 1/14/25 4:38 AM, Takashi Iwai wrote:
> > On Tue, 14 Jan 2025 00:51:59 +0100,
> > Terry Junge wrote:
> >>
> >> +/*
> >> + * Some Plantronics headsets have control names that don't meet ALSA naming
> >> + * standards. This function fixes nonstandard source names. By the time
> >> + * this function is called the control name should look like one of these:
> >> + * "source names Playback Volume"
> >> + * "source names Playback Switch"
> >> + * "source names Capture Volume"
> >> + * "source names Capture Switch"
> >> + * If any of the trigger words are found in the name then the name will
> >> + * be changed to:
> >> + * "Headset Playback Volume"
> >> + * "Headset Playback Switch"
> >> + * "Headset Capture Volume"
> >> + * "Headset Capture Switch"
> >> + * depending on the current suffix.
> >> + */
> >> +static void snd_fix_plt_name(struct snd_usb_audio *chip,
> >> +			     typeof_member(struct snd_ctl_elem_id, name) * name)
> > 
> > I personally find this style of argument is difficult to use.
> > That said, IMO, it's better to stick with the argument
> >   struct snd_ctl_elem_id *id
> > and access via id->name as in your earlier patch; it's more idiomatic,
> > and easier to read.
> > 
> So, is the coding of the rest of the function body acceptable if I just pass a
>    struct snd_ctl_elem_id *id
> instead of an
>    unsigned char[44] *name
> ?

Likely yes.


thanks,

Takashi