linux_dsm_epyc7002/drivers/usb/core
Vincent Palatin 72194739f5 usb: Add device quirk for Logitech PTZ cameras
Add a device quirk for the Logitech PTZ Pro Camera and its sibling the
ConferenceCam CC3000e Camera.
This fixes the failed camera enumeration on some boot, particularly on
machines with fast CPU.

Tested by connecting a Logitech PTZ Pro Camera to a machine with a
Haswell Core i7-4600U CPU @ 2.10GHz, and doing thousands of reboot cycles
while recording the kernel logs and taking camera picture after each boot.
Before the patch, more than 7% of the boots show some enumeration transfer
failures and in a few of them, the kernel is giving up before actually
enumerating the webcam. After the patch, the enumeration has been correct
on every reboot.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-04 11:01:13 +01:00
..
buffer.c Usb: core: buffer: fixed the checkpatch warning 2015-05-10 15:44:10 +02:00
config.c usb: Use the USB_SS_MULT() macro to get the burst multiplier. 2015-09-21 22:48:53 -07:00
devices.c
devio.c usb: devio: fix spacing 2015-08-08 15:17:17 -07:00
driver.c Revert "usb: interface authorization: Control interface probing and claiming" 2015-08-18 09:58:26 -07:00
endpoint.c usb: endpoint: convert spaces to tabs 2015-08-14 16:50:36 -07:00
file.c
generic.c
hcd-pci.c
hcd.c Revert "usb: interface authorization: Introduces the default interface authorization" 2015-08-18 09:58:45 -07:00
hub.c usb: core: hub: Removed some warnings generated by checkpatch.pl 2015-08-14 16:57:43 -07:00
hub.h
Kconfig usb: add bus type for USB ULPI 2015-05-13 12:04:55 -05:00
Makefile
message.c Revert "usb: interface authorization: Introduces the default interface authorization" 2015-08-18 09:58:45 -07:00
notify.c
otg_whitelist.h usb: otg_whitelist: remove whitespace 2015-08-14 16:50:36 -07:00
port.c
quirks.c usb: Add device quirk for Logitech PTZ cameras 2015-10-04 11:01:13 +01:00
sysfs.c Revert "usb: interface authorization: SysFS part of USB interface authorization" 2015-08-18 09:57:43 -07:00
urb.c
usb-acpi.c
usb.c Revert "usb: interface authorization: Use a flag for the default device authorization" 2015-08-18 09:56:04 -07:00
usb.h Revert "usb: interface authorization: Introduces the USB interface authorization" 2015-08-18 09:58:04 -07:00