From: Eric Ding <ericding@xxxxxxxxxxxx>
working if I turn it on (e.g., guvcview), then shut it off, wait a few seconds,
and then turn it on again. From the second time onward, all I get is screen
noise rather than the expected video images.
I did a kernel bisection, which revealed the commit that caused the regression:
commit e1620d591a75a10b15cf61dbf8243a0b7e6731a2
Author: Rafael J. Wysocki <rjw@xxxxxxx>
Date: Fri Mar 18 19:55:36 2011 +0100
USB: Move runtime PM callbacks to usb_device_pm_ops
This patch turns on USB_QUIRK_RESET_RESUME for Logitech Quickcam Fusion
This indirectly disables autosuspend for this webcam, incidentally
matches the way that several other Logitech webcams are handled, and avoids
adding a specific UVC_QUIRK for this problem.
What's more, the camera now works even after a suspend/resume cycle.
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=44191
Signed-off-by: Eric Ding <ericding@xxxxxxxxxxxx>
Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
---
drivers/usb/core/quirks.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 32d3adc..126f04c 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -77,6 +77,9 @@ static const struct usb_device_id usb_quirk_list[] = {
/* Logitech Webcam C270 */
{ USB_DEVICE(0x046d, 0x0825), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* Logitech Quickcam Fusion */
+ { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME },
+
/* Logitech Quickcam Pro 9000 */
{ USB_DEVICE(0x046d, 0x0990), .driver_info = USB_QUIRK_RESET_RESUME },
--
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