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linux/drivers/usb/core
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Vincent Palatin f3a1a937f7 Revert "USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem" 
This reverts commit 0bd860493f.

While the patch was working as stated,ie preventing the L850-GL LTE modem
from crashing on some U3 wake-ups due to a race condition between the
host wake-up and the modem-side wake-up, when using the MBIM interface,
this would force disabling the USB runtime PM on the device.

The increased power consumption is significant for LTE laptops,
and given that with decently recent modem firmwares, when the modem hits
the bug, it automatically recovers (ie it drops from the bus, but
automatically re-enumerates after less than half a second, rather than being
stuck until a power cycle as it was doing with ancient firmware), for
most people, the trade-off now seems in favor of re-enabling it by
default.

For people with access to the platform code, the bug can also be worked-around
successfully by changing the USB3 LFPM polling off-time for the XHCI
controller in the BIOS code.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Link: https://lore.kernel.org/r/20210721092516.2775971-1-vpalatin@chromium.org
Fixes: 0bd860493f ("USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21 11:36:34 +02:00
..
buffer.c usb: core: Replace in_interrupt() in comments 2020-10-28 12:32:59 +01:00
config.c usb: fix a few cases of -Wfallthrough 2020-11-13 15:20:52 +01:00
devices.c usb: common: add function to get interval expressed in us unit 2021-03-10 09:37:17 +01:00
devio.c USB: core: Fix incorrect pipe calculation in do_proc_control() 2021-07-12 20:59:40 +02:00
driver.c USB: core: rename usb_driver_claim_interface() data parameter 2021-03-23 12:39:39 +01:00
endpoint.c usb: common: add function to get interval expressed in us unit 2021-03-10 09:37:17 +01:00
file.c
generic.c usbcore: Check both id_table and match() when both available 2020-10-28 13:24:58 +01:00
hcd-pci.c usb: core: Replace in_interrupt() in comments 2020-10-28 12:32:59 +01:00
hcd.c usb: core: hcd: use map_urb_for_dma for single step set feature urb 2021-05-13 16:02:30 +02:00
hub.c usb: hub: Disable USB 3 device initiated lpm if exit latency is too high 2021-07-21 09:11:22 +02:00
hub.h usb: core: reduce power-on-good delay time of root hub 2021-04-10 10:45:48 +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 2021-06-09 11:11:39 +02:00
notify.c
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
phy.h
port.c Revert "usb: Link the ports to the connectors they are attached to" 2021-04-12 14:36:02 +02:00
quirks.c Revert "USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem" 2021-07-21 11:36:34 +02:00
sysfs.c driver core: Move the "removable" attribute from USB to core 2021-05-27 09:36:31 +02:00
urb.c USB: core: Check buffer length matches wLength for control transfers 2021-05-27 13:46:21 +02:00
usb-acpi.c usb: core: Use ACPI_SUCCESS() at appropriate places 2020-02-19 11:08:52 +01:00
usb.c usb: Iterator for ports 2021-04-09 16:00:00 +02:00
usb.h usbcore: Check both id_table and match() when both available 2020-10-28 13:24:58 +01:00