linux-kernel - [PATCH] HID: quirks: Add quirk for Chicony Electronics HP 5MP Camera

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Message-ID: <20250312063532.551938-1-acelan.kao@canonical.com>
Date: Wed, 12 Mar 2025 14:35:32 +0800
From: "Chia-Lin Kao (AceLan)" <acelan.kao@...onical.com>
To: Jiri Kosina <jikos@...nel.org>,
	Benjamin Tissoires <bentiss@...nel.org>,
	linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] HID: quirks: Add quirk for Chicony Electronics HP 5MP Camera

The Chicony Electronics HP 5MP Camera (USB ID 04F2:B82C) reports a HID
sensor interface that is not actually implemented. Attempting to access
this non-functional sensor via iio_info causes system hangs as runtime PM
tries to wake up an unresponsive sensor.

Add this device to the HID ignore list since the sensor interface is
non-functional by design and should not be exposed to userspace.

Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@...onical.com>
---
 drivers/hid/hid-ids.h    | 1 +
 drivers/hid/hid-quirks.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 7e400624908e..5fdea9116a3e 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -297,6 +297,7 @@
 #define USB_DEVICE_ID_ASUS_AK1D		0x1125
 #define USB_DEVICE_ID_CHICONY_TOSHIBA_WT10A	0x1408
 #define USB_DEVICE_ID_CHICONY_ACER_SWITCH12	0x1421
+#define USB_DEVICE_ID_CHICONY_HP_5MB_CAMERA	0xb82c
 
 #define USB_VENDOR_ID_CHUNGHWAT		0x2247
 #define USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH	0x0001
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index 5d7a418ccdbe..452fac15550b 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -370,6 +370,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_HP_5MB_CAMERA) },
 #endif
 #if IS_ENABLED(CONFIG_HID_CMEDIA)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM6533) },
-- 
2.43.0