Commit 2394d67e authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
Browse files

USB: add RESET_RESUME for webcams shown to be quirky 



The new runtime PM code has shown that many webcams suffer
from a race condition that may crash them upon resume.
Runtime PM is especially prone to show the problem because
it retains power to the cameras at all times. However
system suspension may also crash the devices and retain
power to the devices.
The only way to solve this problem without races is in
usbcore with the RESET_RESUME quirk.

Signed-off-by: default avatarOliver Neukum <oneukum@suse.de>
Signed-off-by: default avatarstable <stable@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 25aa5548

drivers/usb/core/quirks.c

+21 −0
Original line number Diff line number Diff line
@@ -38,6 +38,24 @@ static const struct usb_device_id usb_quirk_list[] = { 
	/* Creative SB Audigy 2 NX */

	{ USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },



	/* Logitech Webcam C200 */

	{ USB_DEVICE(0x046d, 0x0802), .driver_info = USB_QUIRK_RESET_RESUME },



	/* Logitech Webcam C250 */

	{ USB_DEVICE(0x046d, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME },



	/* Logitech Webcam B/C500 */

	{ USB_DEVICE(0x046d, 0x0807), .driver_info = USB_QUIRK_RESET_RESUME },



	/* Logitech Webcam Pro 9000 */

	{ USB_DEVICE(0x046d, 0x0809), .driver_info = USB_QUIRK_RESET_RESUME },



	/* Logitech Webcam C310 */

	{ USB_DEVICE(0x046d, 0x081b), .driver_info = USB_QUIRK_RESET_RESUME },



	/* Logitech Webcam C270 */

	{ USB_DEVICE(0x046d, 0x0825), .driver_info = USB_QUIRK_RESET_RESUME },



	/* Logitech Harmony 700-series */

	{ USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT },
@@ -69,6 +87,9 @@ static const struct usb_device_id usb_quirk_list[] = { 
	{ USB_DEVICE(0x06a3, 0x0006), .driver_info =

			USB_QUIRK_CONFIG_INTF_STRINGS },



	/* Guillemot Webcam Hercules Dualpix Exchange*/

	{ USB_DEVICE(0x06f8, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME },



	/* M-Systems Flash Disk Pioneers */

	{ USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME },

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