linux-yocto/drivers/hid
Hamish Martin 77a24b8f3c HID: mcp2221: Handle reads greater than 60 bytes
commit 2682468671 upstream.

When a user requests more than 60 bytes of data the MCP2221 must chunk
the data in chunks up to 60 bytes long (see command/response code 0x40
in the datasheet).
In order to signal that the device has more data the (undocumented) byte
at byte index 2 of the Get I2C Data response uses the value 0x54. This
contrasts with the case for the final data chunk where the value
returned is 0x55 (MCP2221_I2C_READ_COMPL). The fact that 0x55 was not
returned in the response was interpreted by the driver as a failure
meaning that all reads of more than 60 bytes would fail.

Add support for reads that are split over multiple chunks by looking for
the response code indicating that more data is expected and continuing
the read as the code intended. Some timing delays are required to ensure
the chip has time to refill its FIFO as data is read in from the I2C
bus. This timing has been tested in my system when configured for bus
speeds of 50KHz, 100KHz, and 400KHz and operates well.

Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Fixes: 67a95c2146 ("HID: mcp2221: add usb to i2c-smbus host bridge")
[romain.sioen@microchip.com: backport to stable, up to 6.8. Add "Fixes" tag]
Signed-off-by: Romain Sioen <romain.sioen@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-09-04 15:26:31 +02:00
..
amd-sfh-hid HID: amd_sfh: Switch to device-managed dmam_alloc_coherent() 2024-10-17 15:22:25 +02:00
i2c-hid HID: i2c-hid: improve i2c_hid_get_report error message 2025-04-10 14:33:39 +02:00
intel-ish-hid HID: intel-ish-hid: Send clock sync message immediately after reset 2025-03-28 21:58:51 +01:00
surface-hid HID: surface-hid: Add support for hot-removal 2022-06-13 17:25:08 +02:00
usbhid HID: usbhid: Eliminate recurrent out-of-bounds bug in usbhid_parse() 2025-06-27 11:07:24 +01:00
.kunitconfig HID: input: map battery system charging 2023-10-25 12:03:14 +02:00
hid-a4tech.c HID: a4tech: use A4_2WHEEL_MOUSE_HACK_B8 for A4TECH NB-95 2021-05-05 14:29:13 +02:00
hid-accutouch.c
hid-alps.c HID: alps: Declare U1_UNICORN_LEGACY support 2022-07-22 15:02:20 +02:00
hid-apple.c HID: apple: avoid setting up battery timer for devices without battery 2025-08-28 16:26:05 +02:00
hid-appleir.c HID: appleir: Fix potential NULL dereference at raw event handle 2025-03-13 12:53:12 +01:00
hid-asus.c HID: asus: fix UAF via HID_CLAIMED_INPUT validation 2025-09-04 15:26:29 +02:00
hid-aureal.c
hid-axff.c
hid-belkin.c
hid-betopff.c HID: betop: check shape of output reports 2023-02-01 08:34:24 +01:00
hid-bigbenff.c hid: bigben_probe(): validate report count 2023-03-10 09:33:23 +01:00
hid-cherry.c
hid-chicony.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-cmedia.c HID: cmedia: add support for HS-100B mute button 2021-07-28 11:51:07 +02:00
hid-core.c HID: core: do not bypass hid_hw_raw_request 2025-07-24 08:51:48 +02:00
hid-corsair.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-cougar.c HID: cougar: fix slab-out-of-bounds Read in cougar_report_fixup 2024-09-12 11:10:25 +02:00
hid-cp2112.c hid: cp2112: Fix IRQ shutdown stopping polling for all IRQs on chip 2023-11-20 11:52:07 +01:00
hid-creative-sb0540.c
hid-cypress.c HID: cypress: Support Varmilo Keyboards' media hotkeys 2020-10-23 13:23:44 +02:00
hid-debug.c HID: fix HID device resource race between HID core and debugging support 2023-12-03 07:32:07 +01:00
hid-dr.c
hid-elan.c HID: elan: Fix potential double free in elan_input_configured 2022-04-21 11:38:28 +02:00
hid-elecom.c HID: elecom: add support for TrackBall 056E:011C 2023-03-03 11:52:20 +01:00
hid-elo.c HID: elo: Revert USB reference counting 2022-02-17 14:14:41 +01:00
hid-emsff.c
hid-ezkey.c
hid-ft260.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-gaff.c
hid-gembird.c
hid-generic.c
hid-gfrm.c
hid-glorious.c HID: glorious: fix Glorious Model I HID report 2023-12-20 17:00:23 +01:00
hid-google-hammer.c HID: google: fix unused variable warning under !CONFIG_ACPI 2025-03-13 12:53:16 +01:00
hid-gt683r.c HID: gt683r: add missing MODULE_DEVICE_TABLE 2021-05-27 15:40:34 +02:00
hid-gyration.c
hid-holtek-kbd.c HID: holtek: fix slab-out-of-bounds Write in holtek_kbd_input_event 2023-10-25 12:03:10 +02:00
hid-holtek-mouse.c HID: holtek: fix mouse probing 2021-12-20 11:25:42 +01:00
hid-holtekff.c
hid-hyperv.c HID: usbhid: Eliminate recurrent out-of-bounds bug in usbhid_parse() 2025-06-27 11:07:24 +01:00
hid-icade.c
hid-ids.h HID: quirks: Add quirk for 2 Chicony Electronics HP 5MP Cameras 2025-07-17 18:32:14 +02:00
hid-input-test.c HID: input: rename hidinput_set_battery_charge_status() 2025-09-04 15:26:26 +02:00
hid-input.c HID: input: report battery status changes immediately 2025-09-04 15:26:26 +02:00
hid-ite.c HID: ite: Enable QUIRK_TOUCHPAD_ON_OFF_REPORT on Acer Aspire Switch V 10 2022-11-14 23:55:12 +01:00
hid-jabra.c
hid-kensington.c
hid-keytouch.c
hid-kye.c HID: kye: Sort kye devices 2024-04-27 17:07:09 +02:00
hid-lcpower.c
hid-led.c HID: hid-led: fix maximum brightness for Dream Cheeky 2022-04-21 10:28:49 +02:00
hid-lenovo.c HID: lenovo: Add support for ThinkPad X1 Tablet Thin Keyboard Gen2 2025-07-17 18:32:14 +02:00
hid-letsketch.c HID: Add new Letsketch tablet driver 2022-01-06 14:22:51 +01:00
hid-lg-g15.c HID: lg-g15: Fix comment typo 2022-07-21 13:47:12 +02:00
hid-lg.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-lg.h
hid-lg2ff.c
hid-lg3ff.c
hid-lg4ff.c HID: hid-lg4ff: Add check for empty lbuf 2022-11-14 23:56:52 +01:00
hid-lg4ff.h
hid-lgff.c
hid-logitech-dj.c HID: logitech-dj: Fix memory leak in logi_dj_recv_switch_to_dj_mode() 2024-06-21 14:35:49 +02:00
hid-logitech-hidpp.c HID: logitech-hidpp: Move get_wireless_feature_index() check to hidpp_connect_event() 2023-11-20 11:52:07 +01:00
hid-macally.c
hid-magicmouse.c HID: magicmouse: avoid setting up battery timer when not needed 2025-08-28 16:26:05 +02:00
hid-maltron.c
hid-mcp2221.c HID: mcp2221: Handle reads greater than 60 bytes 2025-09-04 15:26:31 +02:00
hid-megaworld.c HID: Add support for Mega World controller force feedback 2022-05-06 08:29:26 +02:00
hid-mf.c HID: mf: add support for 0079:1846 Mayflash/Dragonrise USB Gamecube Adapter 2020-11-25 14:30:33 +01:00
hid-microsoft.c HID: microsoft: Add rumble support to latest xbox controllers 2024-08-29 17:30:49 +02:00
hid-monterey.c
hid-multitouch.c HID: multitouch: fix slab out-of-bounds access in mt_report_fixup() 2025-09-04 15:26:29 +02:00
hid-nintendo.c HID: nintendo: Prevent divide-by-zero on code 2024-01-20 11:50:09 +01:00
hid-nti.c
hid-ntrig.c HID: hid-ntrig: fix unable to handle page fault in ntrig_report_version() 2025-09-04 15:26:29 +02:00
hid-ortek.c
hid-penmount.c
hid-petalynx.c
hid-picolcd_backlight.c
hid-picolcd_cir.c
hid-picolcd_core.c HID: hid-picolcd_core: Remove unused variable 'ret' 2021-04-07 18:46:20 +02:00
hid-picolcd_debugfs.c
hid-picolcd_fb.c fbdev: Rename pagelist to pagereflist for deferred I/O 2022-05-03 16:04:22 +02:00
hid-picolcd_lcd.c
hid-picolcd_leds.c
hid-picolcd.h
hid-pl.c
hid-plantronics.c HID: hid-plantronics: Add mic mute mapping and generalize quirks 2025-04-07 10:05:44 +02:00
hid-playstation.c HID: playstation: sanity check DualSense calibration data. 2023-02-06 08:06:33 +01:00
hid-primax.c
hid-prodikeys.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-pxrc.c HID: Add driver for PhoenixRC Flight Controller 2022-09-20 11:36:21 +01:00
hid-quirks.c HID: quirks: Add quirk for 2 Chicony Electronics HP 5MP Cameras 2025-07-17 18:32:14 +02:00
hid-razer.c HID: Add driver for Razer Blackwidow keyboards 2022-02-16 17:12:14 +01:00
hid-redragon.c
hid-retrode.c
hid-rmi.c HID: i2c: let RMI devices decide what constitutes wakeup event 2022-12-31 13:32:14 +01:00
hid-roccat-arvo.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-arvo.h
hid-roccat-common.c
hid-roccat-common.h
hid-roccat-isku.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-isku.h
hid-roccat-kone.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-kone.h HID: roccat: Use struct_group() to zero kone_mouse_event 2021-09-25 08:20:48 -07:00
hid-roccat-koneplus.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-koneplus.h
hid-roccat-konepure.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-kovaplus.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-kovaplus.h
hid-roccat-lua.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-lua.h
hid-roccat-pyra.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-pyra.h
hid-roccat-ryos.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-savu.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-savu.h
hid-roccat.c HID: roccat: Fix use-after-free in roccat_read() 2022-09-20 14:49:15 +02:00
hid-saitek.c HID: saitek: add madcatz variant of MMO7 mouse device ID 2022-10-18 14:42:45 +02:00
hid-samsung.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-semitek.c HID: semitek: new driver for GK6X series keyboards 2021-05-05 14:21:08 +02:00
hid-sensor-custom.c HID: hid-sensor-custom: set fixed size for custom attributes 2022-12-31 13:32:14 +01:00
hid-sensor-hub.c HID: hid-sensor-hub: don't use stale platform-data on remove 2025-02-21 13:49:42 +01:00
hid-sigmamicro.c HID: add SiGma Micro driver 2022-02-02 15:12:22 +01:00
hid-sjoy.c
hid-sony.c HID: sony: remove duplicate NULL check before calling usb_free_urb() 2023-10-10 22:00:44 +02:00
hid-speedlink.c
hid-steam.c Merge branch 'for-6.1/core' into for-linus 2022-10-05 10:19:06 +01:00
hid-steelseries.c
hid-sunplus.c
hid-thrustmaster.c HID: thrustmaster: fix memory leak in thrustmaster_interrupts() 2025-05-22 14:10:01 +02:00
hid-tivo.c
hid-tmff.c HID: thrustmaster use swap() to make code cleaner 2021-12-14 10:50:23 +01:00
hid-topre.c hid: topre: Add driver fixing report descriptor 2022-09-20 12:16:25 +01:00
hid-topseed.c
hid-twinhan.c
hid-u2fzero.c HID: add hid_is_usb() function to make it simpler for USB detection 2021-12-02 15:35:57 +01:00
hid-uclogic-core.c HID: uclogic: Add NULL check in uclogic_input_configured() 2025-05-22 14:10:01 +02:00
hid-uclogic-params-test.c HID: uclogic: Parse the UGEE v2 frame type 2022-08-25 10:26:31 +02:00
hid-uclogic-params.c HID: uclogic: Add support for XP-PEN Deco Pro MW 2023-03-10 09:33:57 +01:00
hid-uclogic-params.h HID: uclogic: Add battery quirk 2023-03-10 09:33:56 +01:00
hid-uclogic-rdesc-test.c HID: uclogic: KUnit best practices and naming conventions 2022-08-25 10:26:31 +02:00
hid-uclogic-rdesc.c HID: uclogic: Add support for XP-PEN Deco LW 2022-12-31 13:33:00 +01:00
hid-uclogic-rdesc.h HID: uclogic: Add support for XP-PEN Deco LW 2022-12-31 13:33:00 +01:00
hid-udraw-ps3.c
hid-viewsonic.c HID: uclogic: Switch to Digitizer usage for styluses 2022-05-11 14:19:27 +02:00
hid-vivaldi-common.c HID: vivaldi: convert to use dev_groups 2022-08-25 11:37:21 +02:00
hid-vivaldi-common.h HID: vivaldi: convert to use dev_groups 2022-08-25 11:37:21 +02:00
hid-vivaldi.c HID: vivaldi: convert to use dev_groups 2022-08-25 11:37:21 +02:00
hid-vrc2.c HID: Add driver for VRC-2 Car Controller 2022-09-20 11:35:00 +01:00
hid-waltop.c
hid-wiimote-core.c HID: wiimote: remove h from printk format specifier 2021-01-07 10:14:58 +01:00
hid-wiimote-debug.c
hid-wiimote-modules.c
hid-wiimote.h
hid-xiaomi.c HID: Add support for side buttons of Xiaomi Mi Dual Mode Wireless Mouse Silent 2021-09-22 11:53:07 +02:00
hid-xinmo.c
hid-zpff.c
hid-zydacron.c
hidraw.c HID: hidraw: fix a problem of memory leak in hidraw_release() 2024-02-05 20:13:00 +00:00
Kconfig HID: input: map battery system charging 2023-10-25 12:03:14 +02:00
Makefile HID: remove superfluous (and wrong) Makefile entry for CONFIG_INTEL_ISH_FIRMWARE_DOWNLOADER 2025-04-10 14:33:31 +02:00
uhid.c HID: uhid: Over-ride the default maximum data buffer value with our own 2023-03-17 08:50:17 +01:00
wacom_sys.c HID: wacom: fix kobject reference count leak 2025-07-06 10:58:01 +02:00
wacom_wac.c HID: wacom: Add a new Art Pen 2 2025-09-04 15:26:29 +02:00
wacom_wac.h HID: wacom: Do not warn about dropped packets for first packet 2024-10-17 15:20:54 +02:00
wacom.h HID: wacom: remove the battery when the EKR is off 2023-09-06 21:27:01 +01:00