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2394d67e44
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: Oliver Neukum <oneukum@suse.de> Signed-off-by: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
163 lines
4.9 KiB
C
163 lines
4.9 KiB
C
/*
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* USB device quirk handling logic and table
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*
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* Copyright (c) 2007 Oliver Neukum
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* Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation, version 2.
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*
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*
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*/
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#include <linux/usb.h>
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#include <linux/usb/quirks.h>
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#include "usb.h"
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/* List of quirky USB devices. Please keep this list ordered by:
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* 1) Vendor ID
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* 2) Product ID
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* 3) Class ID
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*
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* as we want specific devices to be overridden first, and only after that, any
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* class specific quirks.
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*
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* Right now the logic aborts if it finds a valid device in the table, we might
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* want to change that in the future if it turns out that a whole class of
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* devices is broken...
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*/
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static const struct usb_device_id usb_quirk_list[] = {
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/* CBM - Flash disk */
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{ USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME },
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/* HP 5300/5370C scanner */
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{ USB_DEVICE(0x03f0, 0x0701), .driver_info =
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USB_QUIRK_STRING_FETCH_255 },
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/* Creative SB Audigy 2 NX */
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{ USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Logitech Webcam C200 */
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{ USB_DEVICE(0x046d, 0x0802), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Logitech Webcam C250 */
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{ USB_DEVICE(0x046d, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Logitech Webcam B/C500 */
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{ USB_DEVICE(0x046d, 0x0807), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Logitech Webcam Pro 9000 */
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{ USB_DEVICE(0x046d, 0x0809), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Logitech Webcam C310 */
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{ USB_DEVICE(0x046d, 0x081b), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Logitech Webcam C270 */
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{ USB_DEVICE(0x046d, 0x0825), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Logitech Harmony 700-series */
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{ USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT },
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/* Philips PSC805 audio device */
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{ USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Artisman Watchdog Dongle */
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{ USB_DEVICE(0x04b4, 0x0526), .driver_info =
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USB_QUIRK_CONFIG_INTF_STRINGS },
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/* Samsung Android phone modem - ID conflict with SPH-I500 */
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{ USB_DEVICE(0x04e8, 0x6601), .driver_info =
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USB_QUIRK_CONFIG_INTF_STRINGS },
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/* Roland SC-8820 */
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{ USB_DEVICE(0x0582, 0x0007), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Edirol SD-20 */
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{ USB_DEVICE(0x0582, 0x0027), .driver_info = USB_QUIRK_RESET_RESUME },
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/* appletouch */
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{ USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Avision AV600U */
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{ USB_DEVICE(0x0638, 0x0a13), .driver_info =
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USB_QUIRK_STRING_FETCH_255 },
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/* Saitek Cyborg Gold Joystick */
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{ USB_DEVICE(0x06a3, 0x0006), .driver_info =
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USB_QUIRK_CONFIG_INTF_STRINGS },
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/* Guillemot Webcam Hercules Dualpix Exchange*/
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{ USB_DEVICE(0x06f8, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME },
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/* M-Systems Flash Disk Pioneers */
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{ USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Keytouch QWERTY Panel keyboard */
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{ USB_DEVICE(0x0926, 0x3333), .driver_info =
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USB_QUIRK_CONFIG_INTF_STRINGS },
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/* X-Rite/Gretag-Macbeth Eye-One Pro display colorimeter */
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{ USB_DEVICE(0x0971, 0x2000), .driver_info = USB_QUIRK_NO_SET_INTF },
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/* Broadcom BCM92035DGROM BT dongle */
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{ USB_DEVICE(0x0a5c, 0x2021), .driver_info = USB_QUIRK_RESET_RESUME },
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/* Action Semiconductor flash disk */
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{ USB_DEVICE(0x10d6, 0x2200), .driver_info =
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USB_QUIRK_STRING_FETCH_255 },
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/* SKYMEDI USB_DRIVE */
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{ USB_DEVICE(0x1516, 0x8628), .driver_info = USB_QUIRK_RESET_RESUME },
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/* BUILDWIN Photo Frame */
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{ USB_DEVICE(0x1908, 0x1315), .driver_info =
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USB_QUIRK_HONOR_BNUMINTERFACES },
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/* INTEL VALUE SSD */
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{ USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
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{ } /* terminating entry must be last */
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};
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static const struct usb_device_id *find_id(struct usb_device *udev)
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{
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const struct usb_device_id *id = usb_quirk_list;
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for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass ||
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id->driver_info; id++) {
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if (usb_match_device(udev, id))
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return id;
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}
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return NULL;
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}
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/*
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* Detect any quirks the device has, and do any housekeeping for it if needed.
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*/
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void usb_detect_quirks(struct usb_device *udev)
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{
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const struct usb_device_id *id = usb_quirk_list;
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id = find_id(udev);
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if (id)
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udev->quirks = (u32)(id->driver_info);
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if (udev->quirks)
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dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
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udev->quirks);
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/* For the present, all devices default to USB-PERSIST enabled */
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#if 0 /* was: #ifdef CONFIG_PM */
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/* Hubs are automatically enabled for USB-PERSIST */
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if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
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udev->persist_enabled = 1;
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#else
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/* In the absence of PM, we can safely enable USB-PERSIST
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* for all devices. It will affect things like hub resets
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* and EMF-related port disables.
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*/
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if (!(udev->quirks & USB_QUIRK_RESET_MORPHS))
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udev->persist_enabled = 1;
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#endif /* CONFIG_PM */
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}
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