From: <Mario.Limonciello@dell.com>
To: <pali@kernel.org>
Cc: <y.linux@paritcher.com>, <linux-kernel@vger.kernel.org>,
<platform-driver-x86@vger.kernel.org>, <mjg59@srcf.ucam.org>
Subject: RE: [PATCH 3/3] platform/x86: dell-wmi: add keys to bios_to_linux_keycode
Date: Mon, 8 Jun 2020 20:58:38 +0000 [thread overview]
Message-ID: <f7ab352f27954bbb88bafb41d6b17fe1@AUSX13MPC105.AMER.DELL.COM> (raw)
In-Reply-To: <20200608204826.kb7x5mh6hzj2hxcz@pali>
> -----Original Message-----
> From: platform-driver-x86-owner@vger.kernel.org <platform-driver-x86-
> owner@vger.kernel.org> On Behalf Of Pali Rohár
> Sent: Monday, June 8, 2020 3:48 PM
> To: Limonciello, Mario
> Cc: y.linux@paritcher.com; linux-kernel@vger.kernel.org; platform-driver-
> x86@vger.kernel.org; mjg59@srcf.ucam.org
> Subject: Re: [PATCH 3/3] platform/x86: dell-wmi: add keys to
> bios_to_linux_keycode
>
>
> [EXTERNAL EMAIL]
>
> On Monday 08 June 2020 15:46:44 Mario.Limonciello@dell.com wrote:
> > I would actually question if there is value to lines in dell-wmi.c like
> this:
> >
> > pr_info("Unknown WMI event type 0x%x\n", (int)buffer_entry[1]);
> >
> > and
> >
> > pr_info("Unknown key with type 0x%04x and code 0x%04x pressed\n", type,
> code);
> >
> > In both of those cases the information doesn't actually help the user, by
> default it's
> > ignored by the driver anyway. It just notifies the user it's something
> the driver doesn't
> > comprehend. I would think these are better suited to downgrade to debug.
> And if
> > a key combination isn't doing something expected the user can use dyndbg
> to turn it
> > back on and can be debugged what should be populated or "explicitly"
> ignored.
>
> My motivation for these messages was to provide information to user that
> kernel received event, but was not able to process it as it do not
> understand it.
>
> It could help in situation when user press special key and nothing is
> delivered to userspace. But he could see that something happened in log.
>
But does a user know what to do with this information? From time to time
coming to kernel mailing list, but that's it.
I think same person who would know to come to kernel mailing list for a key
not working can likely also hand turning on dyndbg to get the info.
> Similar message is also printed by PS/2 keyboard driver atkbd.c:
>
> case ATKBD_KEY_UNKNOWN:
> dev_warn(&serio->dev,
> "Unknown key %s (%s set %d, code %#x on %s).\n",
> atkbd->release ? "released" : "pressed",
> atkbd->translated ? "translated" : "raw",
> atkbd->set, code, serio->phys);
> dev_warn(&serio->dev,
> "Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
> code & 0x80 ? "e0" : "", code & 0x7f);
> input_sync(dev);
> break;
I think the difference here is that user can actually do something from userland
to do with `setkeycodes` for PS2.
next prev parent reply other threads:[~2020-06-08 20:58 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 4:22 [PATCH 0/3] platform/x86: dell-wmi: new keys Y Paritcher
2020-06-08 4:22 ` [PATCH 1/3] platform/x86: dell-wmi: add new backlight events Y Paritcher
2020-06-08 8:35 ` Pali Rohár
2020-06-08 15:30 ` Mario.Limonciello
2020-06-08 20:11 ` Y Paritcher
2020-06-08 20:14 ` Mario.Limonciello
2020-06-08 20:36 ` Pali Rohár
2020-06-08 20:38 ` Mario.Limonciello
2020-06-08 4:22 ` [PATCH 2/3] platform/x86: dell-wmi: add new keymap type 0x0012 Y Paritcher
2020-06-08 8:50 ` Pali Rohár
2020-06-08 20:12 ` Y Paritcher
2020-06-08 15:40 ` Mario.Limonciello
2020-06-08 20:12 ` Y Paritcher
2020-06-08 20:30 ` Pali Rohár
2020-06-08 20:36 ` Mario.Limonciello
2020-06-08 21:03 ` Y Paritcher
2020-06-08 22:00 ` Mario.Limonciello
2020-06-08 22:53 ` Y Paritcher
2020-06-09 10:44 ` Hans de Goede
2020-06-09 15:36 ` Mario.Limonciello
2020-06-09 16:14 ` Hans de Goede
2020-06-09 19:41 ` Mario.Limonciello
2020-06-09 15:49 ` Pali Rohár
2020-06-09 16:45 ` Sebastian Reichel
2020-06-09 16:59 ` Hans de Goede
2020-06-19 15:31 ` Sebastian Reichel
2020-06-19 17:26 ` Mario.Limonciello
2020-06-09 8:04 ` Pali Rohár
2020-06-08 4:22 ` [PATCH 3/3] platform/x86: dell-wmi: add keys to bios_to_linux_keycode Y Paritcher
2020-06-08 6:36 ` kernel test robot
2020-06-08 7:36 ` kernel test robot
2020-06-08 9:00 ` Pali Rohár
2020-06-08 15:46 ` Mario.Limonciello
2020-06-08 20:12 ` Y Paritcher
2020-06-08 20:48 ` Pali Rohár
2020-06-08 20:58 ` Mario.Limonciello [this message]
2020-06-09 8:27 ` Pali Rohár
2020-06-08 23:05 ` [PATCH v2 0/3] platform/x86: dell-wmi: new keys Y Paritcher
2020-06-08 23:05 ` [PATCH v2 1/3] platform/x86: dell-wmi: add new backlight events Y Paritcher
2020-06-08 23:24 ` Pali Rohár
2020-06-08 23:05 ` [PATCH v2 2/3] platform/x86: dell-wmi: add new keymap type 0x0012 Y Paritcher
2020-06-08 23:33 ` Pali Rohár
2020-06-09 0:26 ` Mario.Limonciello
2020-06-09 0:57 ` Y Paritcher
2020-06-09 8:40 ` Pali Rohár
2020-06-09 8:50 ` Pali Rohár
2020-06-08 23:05 ` [PATCH v2 3/3] platform/x86: dell-wmi: add new dmi keys to bios_to_linux_keycode Y Paritcher
2020-06-08 23:27 ` Randy Dunlap
2020-06-08 23:55 ` Pali Rohár
2020-06-09 0:43 ` Y Paritcher
2020-06-09 8:35 ` Pali Rohár
2020-06-09 19:49 ` Mario.Limonciello
2020-06-10 9:44 ` Pali Rohár
2020-06-10 12:35 ` Mario.Limonciello
2020-06-12 14:14 ` Pali Rohár
2020-06-12 14:59 ` Mario.Limonciello
2020-06-09 3:52 ` [PATCH v3 0/3] platform/x86: dell-wmi: new keys Y Paritcher
2020-06-09 3:52 ` [PATCH v3 1/3] platform/x86: dell-wmi: add new backlight events Y Paritcher
2020-06-09 16:02 ` Mario.Limonciello
2020-06-09 3:52 ` [PATCH v3 2/3] platform/x86: dell-wmi: add new keymap type 0x0012 Y Paritcher
2020-06-09 3:52 ` [PATCH v3 3/3] platform/x86: dell-wmi: add new dmi mapping for keycode 0xffff Y Paritcher
2020-06-09 9:19 ` Pali Rohár
2020-06-10 17:56 ` [PATCH v4 0/3] platform/x86: dell-wmi: new keys Y Paritcher
2020-06-10 17:56 ` [PATCH v4 1/3] platform/x86: dell-wmi: add new backlight events Y Paritcher
2020-06-10 17:56 ` [PATCH v4 2/3] platform/x86: dell-wmi: add new keymap type 0x0012 Y Paritcher
2020-06-10 17:56 ` [PATCH v4 3/3] platform/x86: dell-wmi: add new dmi mapping for keycode 0xffff Y Paritcher
2020-06-10 19:22 ` [PATCH v4 0/3] platform/x86: dell-wmi: new keys Mario.Limonciello
2020-07-09 19:29 ` Andy Shevchenko
2020-07-13 7:29 ` Pali Rohár
2020-08-14 8:10 ` Pali Rohár
2020-06-12 14:09 ` Pali Rohár
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