linux/include/linux/usb
Danilo Krummrich cb88a05887 usb: quirks: add control message delay for 1b1c:1b20
Corsair Strafe RGB keyboard does not respond to usb control messages
sometimes and hence generates timeouts.

Commit de3af5bf25 ("usb: quirks: add delay init quirk for Corsair
Strafe RGB keyboard") tried to fix those timeouts by adding
USB_QUIRK_DELAY_INIT.

Unfortunately, even with this quirk timeouts of usb_control_msg()
can still be seen, but with a lower frequency (approx. 1 out of 15):

[   29.103520] usb 1-8: string descriptor 0 read error: -110
[   34.363097] usb 1-8: can't set config #1, error -110

Adding further delays to different locations where usb control
messages are issued just moves the timeouts to other locations,
e.g.:

[   35.400533] usbhid 1-8:1.0: can't add hid device: -110
[   35.401014] usbhid: probe of 1-8:1.0 failed with error -110

The only way to reliably avoid those issues is having a pause after
each usb control message. In approx. 200 boot cycles no more timeouts
were seen.

Addionaly, keep USB_QUIRK_DELAY_INIT as it turned out to be necessary
to have the delay in hub_port_connect() after hub_port_init().

The overall boot time seems not to be influenced by these additional
delays, even on fast machines and lightweight distributions.

Fixes: de3af5bf25 ("usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard")
Cc: stable@vger.kernel.org
Signed-off-by: Danilo Krummrich <danilokrummrich@dk-develop.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-06 09:17:34 -08:00
..
association.h
atmel_usba_udc.h
audio-v2.h
audio.h
c67x00.h
cdc-wdm.h
cdc.h
cdc_ncm.h
ch9.h
chipidea.h
composite.h
ehci-dbgp.h
ehci_def.h
ehci_pdriver.h
ezusb.h
functionfs.h
g_hid.h
gadget.h
gadget_configfs.h
gpio_vbus.h
hcd.h
input.h
iowarrior.h
irda.h
isp116x.h
isp1301.h
isp1362.h
isp1760.h
m66592.h
musb-ux500.h
musb.h
net2280.h
of.h
ohci_pdriver.h
otg-fsm.h
otg.h
pd.h
pd_bdo.h
pd_vdo.h usb: pd: fix the offset for SVID specific commands 2017-12-19 11:47:23 +01:00
phy.h
phy_companion.h
quirks.h usb: quirks: add control message delay for 1b1c:1b20 2018-03-06 09:17:34 -08:00
r8a66597.h
renesas_usbhs.h usb: renesas_usbhs: Add support for RZ/A1 2018-01-09 16:18:50 +01:00
rndis_host.h
samsung_usb_phy.h
serial.h
sl811.h
storage.h
tcpm.h
tegra_usb_phy.h
tilegx.h
typec.h
uas.h
ulpi.h
usb338x.h
usb_phy_generic.h
usbnet.h
wusb-wa.h
wusb.h
xhci-dbgp.h