[PATCH] HID: lenovo: suppress phantom radio control input on Yoga Slim 7x Gen 11

[PATCH] HID: lenovo: suppress phantom radio control input on Yoga Slim 7x Gen 11

[Oleg Keri]

The ITE keyboard controller (048d:83db) declares a Wireless Radio Controls
application collection, which hid-input registers as a second input device
advertising KEY_RFKILL. That collection never reports anything: the
airplane mode key is wired to the embedded controller and reaches the host
as EC event 0x19, where the platform driver emits the key.

Map the collection to nothing so hidinput_has_been_populated() discards it
and userspace is left with a single, real KEY_RFKILL source.

Signed-off-by: Oleg Keri <okerixx@gmail.com>
---
 drivers/hid/hid-lenovo.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
index 3976d7b53b14..617bba662659 100644
--- a/drivers/hid/hid-lenovo.c
+++ b/drivers/hid/hid-lenovo.c
@@ -476,6 +476,16 @@ static int lenovo_input_mapping_x1_tab_kbd(struct hid_device *hdev,
 	return 0;
 }
 
+static int lenovo_input_mapping_yoga7x_g11_kbd(struct hid_device *hdev,
+		struct hid_input *hi, struct hid_field *field,
+		struct hid_usage *usage, unsigned long **bit, int *max)
+{
+	if (field->application == HID_GD_WIRELESS_RADIO_CTLS)
+		return -1;
+
+	return 0;
+}
+
 static int lenovo_input_mapping(struct hid_device *hdev,
 		struct hid_input *hi, struct hid_field *field,
 		struct hid_usage *usage, unsigned long **bit, int *max)
@@ -510,6 +520,8 @@ static int lenovo_input_mapping(struct hid_device *hdev,
 	case USB_DEVICE_ID_LENOVO_X1_TAB2:
 	case USB_DEVICE_ID_LENOVO_X1_TAB3:
 		return lenovo_input_mapping_x1_tab_kbd(hdev, hi, field, usage, bit, max);
+	case I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD:
+		return lenovo_input_mapping_yoga7x_g11_kbd(hdev, hi, field, usage, bit, max);
 	default:
 		return 0;
 	}
@@ -1568,6 +1580,8 @@ static const struct hid_device_id lenovo_devices[] = {
 		     USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X13_TAB) },
 	{ HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
 		     USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_KEYBOARD) },
+	{ HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
+		     USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD) },
 	{ }
 };
 
-- 
2.55.0

base-commit: 5e036ce12de91c6fd674dad33b169c6150be2a7a

Re: [PATCH] HID: lenovo: suppress phantom radio control input on Yoga Slim 7x Gen 11

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Low] The macro `I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD` is used but never defined, resulting in a compilation error.
--

commit 4ee02285ee5c593b77b5e50d44817b425e9ba25b
Author: Oleg Keri <okerixx@gmail.com>

HID: lenovo: suppress phantom radio control input on Yoga Slim 7x Gen 11

The ITE keyboard controller (048d:83db) declares a Wireless Radio Controls
application collection, which hid-input registers as a second input device
advertising KEY_RFKILL. That collection never reports anything: the
airplane mode key is wired to the embedded controller and reaches the host
as EC event 0x19, where the platform driver emits the key.

> diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
> index 3976d7b53b14b..617bba6626592 100644
> --- a/drivers/hid/hid-lenovo.c
> +++ b/drivers/hid/hid-lenovo.c
[ ... ]
> @@ -510,6 +520,8 @@ static int lenovo_input_mapping(struct hid_device *hdev,
>  	case USB_DEVICE_ID_LENOVO_X1_TAB2:
>  	case USB_DEVICE_ID_LENOVO_X1_TAB3:
>  		return lenovo_input_mapping_x1_tab_kbd(hdev, hi, field, usage, bit, max);
> +	case I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD:

[Severity: Low]
Where is I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD defined?

It appears this macro is undeclared, which will cause a build failure when
compiling drivers/hid/hid-lenovo.c in lenovo_input_mapping().

> +		return lenovo_input_mapping_yoga7x_g11_kbd(hdev, hi, field, usage, bit, max);
>  	default:
>  		return 0;
>  	}
> @@ -1568,6 +1580,8 @@ static const struct hid_device_id lenovo_devices[] = {
>  		     USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X13_TAB) },
>  	{ HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
>  		     USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_KEYBOARD) },
> +	{ HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
> +		     USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD) },

[Severity: Low]
Will this also fail to compile in lenovo_devices because
I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD is missing its definition?

>  	{ }
>  };
>

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260908091907.5653-1-okerixx@gmail.com?part=1

Re: [PATCH] HID: lenovo: suppress phantom radio control input on Yoga Slim 7x Gen 11

[kernel test robot]

Hi Oleg,

kernel test robot noticed the following build errors:

[auto build test ERROR on 5e036ce12de91c6fd674dad33b169c6150be2a7a]

url:    https://github.com/intel-lab-lkp/linux/commits/Oleg-Keri/HID-lenovo-suppress-phantom-radio-control-input-on-Yoga-Slim-7x-Gen-11/20260908-111907
base:   5e036ce12de91c6fd674dad33b169c6150be2a7a
patch link:    https://lore.kernel.org/r/20260908091907.5653-1-okerixx%40gmail.com
patch subject: [PATCH] HID: lenovo: suppress phantom radio control input on Yoga Slim 7x Gen 11
config: sh-allyesconfig (https://download.01.org/0day-ci/archive/20260909/202609092332.pk1AmDaL-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260909/202609092332.pk1AmDaL-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609092332.pk1AmDaL-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/hid/hid-lenovo.c: In function 'lenovo_input_mapping':
>> drivers/hid/hid-lenovo.c:523:14: error: 'I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD' undeclared (first use in this function); did you mean 'I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_KEYBOARD'?
     523 |         case I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD:
         |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |              I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_KEYBOARD
   drivers/hid/hid-lenovo.c:523:14: note: each undeclared identifier is reported only once for each function it appears in
   In file included from drivers/hid/hid-lenovo.c:30:
   drivers/hid/hid-lenovo.c: At top level:
>> drivers/hid/hid-lenovo.c:1584:41: error: 'I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD' undeclared here (not in a function); did you mean 'I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_KEYBOARD'?
    1584 |                      USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD) },
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/hid.h:817:64: note: in definition of macro 'HID_DEVICE'
     817 |         .bus = (b), .group = (g), .vendor = (ven), .product = (prod)
         |                                                                ^~~~


vim +523 drivers/hid/hid-lenovo.c

   488	
   489	static int lenovo_input_mapping(struct hid_device *hdev,
   490			struct hid_input *hi, struct hid_field *field,
   491			struct hid_usage *usage, unsigned long **bit, int *max)
   492	{
   493		switch (hdev->product) {
   494		case USB_DEVICE_ID_LENOVO_TPKBD:
   495			return lenovo_input_mapping_tpkbd(hdev, hi, field,
   496								usage, bit, max);
   497		case USB_DEVICE_ID_LENOVO_CUSBKBD:
   498		case USB_DEVICE_ID_LENOVO_CBTKBD:
   499			return lenovo_input_mapping_cptkbd(hdev, hi, field,
   500								usage, bit, max);
   501		case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
   502		case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
   503			return lenovo_input_mapping_tpIIkbd(hdev, hi, field,
   504								usage, bit, max);
   505		case USB_DEVICE_ID_IBM_SCROLLPOINT_III:
   506		case USB_DEVICE_ID_IBM_SCROLLPOINT_PRO:
   507		case USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL:
   508		case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL:
   509		case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO:
   510		case USB_DEVICE_ID_LENOVO_SCROLLPOINT_OPTICAL:
   511			return lenovo_input_mapping_scrollpoint(hdev, hi, field,
   512								usage, bit, max);
   513		case USB_DEVICE_ID_LENOVO_TP10UBKBD:
   514			return lenovo_input_mapping_tp10_ultrabook_kbd(hdev, hi, field,
   515								       usage, bit, max);
   516		case USB_DEVICE_ID_LENOVO_X12_TAB:
   517		case USB_DEVICE_ID_LENOVO_X12_TAB2:
   518		case USB_DEVICE_ID_LENOVO_X13_TAB:
   519		case USB_DEVICE_ID_LENOVO_X1_TAB:
   520		case USB_DEVICE_ID_LENOVO_X1_TAB2:
   521		case USB_DEVICE_ID_LENOVO_X1_TAB3:
   522			return lenovo_input_mapping_x1_tab_kbd(hdev, hi, field, usage, bit, max);
 > 523		case I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD:
   524			return lenovo_input_mapping_yoga7x_g11_kbd(hdev, hi, field, usage, bit, max);
   525		default:
   526			return 0;
   527		}
   528	}
   529	

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [PATCH] HID: lenovo: suppress phantom radio control input on Yoga Slim 7x Gen 11

[kernel test robot]

Hi Oleg,

kernel test robot noticed the following build errors:

[auto build test ERROR on 5e036ce12de91c6fd674dad33b169c6150be2a7a]

url:    https://github.com/intel-lab-lkp/linux/commits/Oleg-Keri/HID-lenovo-suppress-phantom-radio-control-input-on-Yoga-Slim-7x-Gen-11/20260908-111907
base:   5e036ce12de91c6fd674dad33b169c6150be2a7a
patch link:    https://lore.kernel.org/r/20260908091907.5653-1-okerixx%40gmail.com
patch subject: [PATCH] HID: lenovo: suppress phantom radio control input on Yoga Slim 7x Gen 11
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20260910/202609100719.bu2saXPQ-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project d1c0cc5e760f9cbb68e2acec80a476c4b8b898b7)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260910/202609100719.bu2saXPQ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609100719.bu2saXPQ-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/hid/hid-lenovo.c:523:7: error: use of undeclared identifier 'I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD'
     523 |         case I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD:
         |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/hid/hid-lenovo.c:1584:27: error: use of undeclared identifier 'I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD'
    1584 |                      USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD) },
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/hid/hid-lenovo.c:1588:1: error: definition of variable with array type needs an explicit size or an initializer
    1588 | MODULE_DEVICE_TABLE(hid, lenovo_devices);
         | ^
   include/linux/module.h:256:21: note: expanded from macro 'MODULE_DEVICE_TABLE'
     256 | static typeof(name) __mod_device_table(type, name)                      \
         |                     ^
   include/linux/module.h:247:2: note: expanded from macro '__mod_device_table'
     247 |         __PASTE(__mod_device_table__,   \
         |         ^
   include/linux/compiler_types.h:16:23: note: expanded from macro '__PASTE'
      16 | #define __PASTE(a, b) ___PASTE(a, b)
         |                       ^
   include/linux/compiler_types.h:15:24: note: expanded from macro '___PASTE'
      15 | #define ___PASTE(a, b) a##b
         |                        ^
   <scratch space>:15:1: note: expanded from here
      15 | __mod_device_table__kmod_hid_lenovo__hid__lenovo_devices
         | ^
   3 errors generated.


vim +/I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD +523 drivers/hid/hid-lenovo.c

   488	
   489	static int lenovo_input_mapping(struct hid_device *hdev,
   490			struct hid_input *hi, struct hid_field *field,
   491			struct hid_usage *usage, unsigned long **bit, int *max)
   492	{
   493		switch (hdev->product) {
   494		case USB_DEVICE_ID_LENOVO_TPKBD:
   495			return lenovo_input_mapping_tpkbd(hdev, hi, field,
   496								usage, bit, max);
   497		case USB_DEVICE_ID_LENOVO_CUSBKBD:
   498		case USB_DEVICE_ID_LENOVO_CBTKBD:
   499			return lenovo_input_mapping_cptkbd(hdev, hi, field,
   500								usage, bit, max);
   501		case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
   502		case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
   503			return lenovo_input_mapping_tpIIkbd(hdev, hi, field,
   504								usage, bit, max);
   505		case USB_DEVICE_ID_IBM_SCROLLPOINT_III:
   506		case USB_DEVICE_ID_IBM_SCROLLPOINT_PRO:
   507		case USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL:
   508		case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL:
   509		case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO:
   510		case USB_DEVICE_ID_LENOVO_SCROLLPOINT_OPTICAL:
   511			return lenovo_input_mapping_scrollpoint(hdev, hi, field,
   512								usage, bit, max);
   513		case USB_DEVICE_ID_LENOVO_TP10UBKBD:
   514			return lenovo_input_mapping_tp10_ultrabook_kbd(hdev, hi, field,
   515								       usage, bit, max);
   516		case USB_DEVICE_ID_LENOVO_X12_TAB:
   517		case USB_DEVICE_ID_LENOVO_X12_TAB2:
   518		case USB_DEVICE_ID_LENOVO_X13_TAB:
   519		case USB_DEVICE_ID_LENOVO_X1_TAB:
   520		case USB_DEVICE_ID_LENOVO_X1_TAB2:
   521		case USB_DEVICE_ID_LENOVO_X1_TAB3:
   522			return lenovo_input_mapping_x1_tab_kbd(hdev, hi, field, usage, bit, max);
 > 523		case I2C_DEVICE_ID_ITE_LENOVO_YOGA_SLIM_7X_G11_KEYBOARD:
   524			return lenovo_input_mapping_yoga7x_g11_kbd(hdev, hi, field, usage, bit, max);
   525		default:
   526			return 0;
   527		}
   528	}
   529	

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki