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From: Y Paritcher <y.linux@paritcher.com>
To: "Pali Rohár" <pali@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	platform-driver-x86@vger.kernel.org,
	Matthew Garrett <mjg59@srcf.ucam.org>,
	Mario.Limonciello@dell.com
Subject: [PATCH v3 3/3] platform/x86: dell-wmi: add new dmi mapping for keycode 0xffff
Date: Mon,  8 Jun 2020 23:52:54 -0400	[thread overview]
Message-ID: <e2f6b5ee27a3a6142a2f8806be8dfbce442548da.1591673143.git.y.linux@paritcher.com> (raw)
In-Reply-To: <cover.1591673143.git.y.linux@paritcher.com>

This looks to be a special value for some sort of custom scancode.
This code could not be triggered for any keypress and is included
from the 0xB2 DMI table.

This prevents the following messages from being logged at startup on a
Dell Inspiron 5593:

    dell_wmi: firmware scancode 0x48 maps to unrecognized keycode 0xffff
    dell_wmi: firmware scancode 0x50 maps to unrecognized keycode 0xffff

as per this code comment:

   Log if we find an entry in the DMI table that we don't
   understand.  If this happens, we should figure out what
   the entry means and add it to bios_to_linux_keycode.

Signed-off-by: Y Paritcher <y.linux@paritcher.com>
---
 drivers/platform/x86/dell-wmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index e3bc2601e631..bbdb3e860892 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -506,7 +506,7 @@ static void handle_dmi_entry(const struct dmi_header *dm, void *opaque)
 		u16 keycode = (bios_entry->keycode <
 			       ARRAY_SIZE(bios_to_linux_keycode)) ?
 			bios_to_linux_keycode[bios_entry->keycode] :
-			KEY_RESERVED;
+			(bios_entry->keycode == 0xffff ? KEY_UNKNOWN : KEY_RESERVED);
 
 		/*
 		 * Log if we find an entry in the DMI table that we don't
-- 
2.27.0


  parent reply	other threads:[~2020-06-09  3:53 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
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   ` Y Paritcher [this message]
2020-06-09  9:19     ` [PATCH v3 3/3] platform/x86: dell-wmi: add new dmi mapping for keycode 0xffff 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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