xiaomi-sm8450/android_kernel_xiaomi_sm8450
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android_kernel_xiaomi_sm8450/drivers/usb/core
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Nicolas Dumazet 143ba5c2d2 usb: add NO_LPM quirk for Realforce 87U Keyboard 
commit 181135bb20dcb184edd89817831b888eb8132741 upstream.

Before adding this quirk, this (mechanical keyboard) device would not be
recognized, logging:

  new full-speed USB device number 56 using xhci_hcd
  unable to read config index 0 descriptor/start: -32
  chopping to 0 config(s)

It would take dozens of plugging/unpuggling cycles for the keyboard to
be recognized. Keyboard seems to simply work after applying this quirk.

This issue had been reported by users in two places already ([1], [2])
but nobody tried upstreaming a patch yet. After testing I believe their
suggested fix (DELAY_INIT + NO_LPM + DEVICE_QUALIFIER) was probably a
little overkill. I assume this particular combination was tested because
it had been previously suggested in [3], but only NO_LPM seems
sufficient for this device.

[1]: https://qiita.com/float168/items/fed43d540c8e2201b543
[2]: https://blog.kostic.dev/posts/making-the-realforce-87ub-work-with-usb30-on-Ubuntu/
[3]: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678477

Cc: stable@vger.kernel.org
Signed-off-by: Nicolas Dumazet <ndumazet@google.com>
Link: https://lore.kernel.org/r/20221109122946.706036-1-ndumazet@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-25 17:45:51 +01:00
..
buffer.c
usb: add a hcd_uses_dma helper
2019-08-15 15:18:05 +02:00
config.c
usb: core: config: using bit mask instead of individual bits
2021-12-14 11:32:44 +01:00
devices.c
usb: common: add function to get interval expressed in us unit
2022-10-26 13:25:31 +02:00
devio.c
USB: core: Fix incorrect pipe calculation in do_proc_control()
2021-08-26 08:35:34 -04:00
driver.c
usbcore: Check both id_table and match() when both available
2020-10-28 13:24:58 +01:00
endpoint.c
usb: common: add function to get interval expressed in us unit
2022-10-26 13:25:31 +02:00
file.c
USB: core: Fix races in character device registration and deregistraion
2019-08-12 22:47:24 +02:00
generic.c
usbcore: Check both id_table and match() when both available
2020-10-28 13:24:58 +01:00
hcd-pci.c
USB: hcd-pci: Fully suspend across freeze/thaw cycle
2022-06-14 18:32:42 +02:00
hcd.c
USB: HCD: Fix URB giveback issue in tasklet function
2022-08-21 15:15:26 +02:00
hub.c
USB: core: Fix RST error in hub.c
2022-09-28 11:10:24 +02:00
hub.h
usb: core: reduce power-on-good delay time of root hub
2021-06-03 09:00:52 +02:00
Kconfig
USB: hub: Add Kconfig option to reduce number of port initialization retries
2020-10-02 11:29:02 +02:00
ledtrig-usbport.c
usb: core: ledtrig-usbport: Demote obvious misuse of kerneldoc to standard comment blocks
2020-07-09 16:46:57 +02:00
Makefile
…
message.c
USB: core: Avoid WARNings for 0-length descriptor requests
2021-08-26 08:35:34 -04:00
notify.c
USB: core: Remove usbfs_mutex
2019-06-26 10:28:09 +08:00
of.c
drivers: usb: Fix trivial spelling
2020-06-18 10:13:16 +02:00
otg_productlist.h
USB: OTG: rename product list of devices
2020-06-19 08:58:55 +02:00
phy.c
usb: core: phy: add support for PHY calibration
2019-09-03 15:54:55 +02:00
phy.h
usb: core: phy: add support for PHY calibration
2019-09-03 15:54:55 +02:00
port.c
usb: core: port: do error out if usb_autopm_get_interface() fails
2020-03-04 10:58:16 +01:00
quirks.c
usb: add NO_LPM quirk for Realforce 87U Keyboard
2022-11-25 17:45:51 +01:00
sysfs.c
usb: core: fix slab-out-of-bounds Read in read_descriptors
2020-09-04 16:41:22 +02:00
urb.c
USB: core: Fix hang in usb_kill_urb by adding memory barriers
2022-02-01 17:25:41 +01:00
usb-acpi.c
usb: core: Use ACPI_SUCCESS() at appropriate places
2020-02-19 11:08:52 +01:00
usb.c
drm: Use USB controller's DMA mask when importing dmabufs
2021-03-17 17:06:19 +01:00
usb.h
usbcore: Check both id_table and match() when both available
2020-10-28 13:24:58 +01:00