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From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Hans de Goede <hdegoede@redhat.com>
Cc: Luke Jones <luke@ljones.dev>,
	linux-input <linux-input@vger.kernel.org>,
	Jiri Kosina <jikos@kernel.org>,
	Andy Shevchenko <andy@infradead.org>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>
Subject: Re: [PATCH V8] HID: ASUS: Add support for ASUS N-Key keyboard
Date: Mon, 19 Oct 2020 14:11:32 +0300	[thread overview]
Message-ID: <CAHp75VdUipcuHaapttW05n+C5Txw0AS9xstoeLKbiqsKxx14Kg@mail.gmail.com> (raw)
In-Reply-To: <b95839dc-82eb-7413-9000-17939f21b35b@redhat.com>

On Mon, Oct 19, 2020 at 12:54 PM Hans de Goede <hdegoede@redhat.com> wrote:
> On 10/18/20 11:36 PM, Luke Jones wrote:

> >>>  +               if (report->id == FEATURE_KBD_LED_REPORT_ID1 ||
> >>>  +                               report->id == FEATURE_KBD_LED_REPORT_ID2) {
> >>
> >>>  +                       return -1;
> >>
> >> is -1 a good return code? (this Q for all cases)

> >>>  +                               ret = asus_wmi_send_event(drvdata, 0xae);
> >>>  +                               if (ret < 0) {
> >>>  +                                       hid_warn(hdev, "Asus failed to trigger fan control event");
> >>>  +                               }
> >>
> >>>  +                               return -1;
> >
> > In the case of this block I really don't have any idea how
> > to handle it. I want to stop these particular keycodes from
> > being evaluated elsewhere. Returning -1 seemed to be the only
> > way to do this, unless my understanding is very incorrect.
> >
> > Any help or guidance on how to handle this is definitely
> > appreciated.
>
> Sorry, I missed that Andy's comment on this where for the raw-event handler,
> in this case -1 has the special meaning of don't process this event further,
> rather then being an error code.

Good to know, thanks!

> So, since in this case -1 has a special meaning and it is NOT an error
> code, using -1 is fine. IOW you can keep this part as is.

I agree with Hans, you may ignore my question in those cases.

-- 
With Best Regards,
Andy Shevchenko

  reply	other threads:[~2020-10-19 11:10 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-13  7:35 [PATCH V8] HID: ASUS: Add support for ASUS N-Key keyboard Luke D Jones
2020-10-13  7:37 ` Luke Jones
2020-10-15 11:11 ` Andy Shevchenko
2020-10-18 21:23   ` Luke Jones
2020-10-18 21:36   ` Luke Jones
2020-10-19  9:54     ` Hans de Goede
2020-10-19 11:11       ` Andy Shevchenko [this message]
2020-10-16 10:51 ` Hans de Goede
2020-10-16 20:10   ` Luke Jones
2020-10-18  8:59     ` Hans de Goede

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