Commit b2a542bb authored Sep 05, 2017 by Dmitry Fleytman Committed by Greg Kroah-Hartman Sep 18, 2017

usb: Increase quirk delay for USB devices



Commit e0429362
("usb: Add device quirk for Logitech HD Pro Webcams C920 and C930e")
introduced quirk to workaround an issue with some Logitech webcams.

The workaround is introducing delay for some USB operations.

According to our testing, delay introduced by original commit
is not long enough and in rare cases we still see issues described
by the aforementioned commit.

This patch increases delays introduced by original commit.
Having this patch applied we do not see those problems anymore.

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent bbf26183

drivers/usb/core/config.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -852,7 +852,7 @@ int usb_get_configuration(struct usb_device *dev)
		}

		if (dev->quirks & USB_QUIRK_DELAY_INIT)
		msleep(100);
		msleep(200);

		result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno,
		bigbuffer, length);

drivers/usb/core/hub.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -4838,7 +4838,7 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
		goto loop;

		if (udev->quirks & USB_QUIRK_DELAY_INIT)
		msleep(1000);
		msleep(2000);

		/* consecutive bus-powered hubs aren't reliable; they can
		* violate the voltage drop budget. if the new child has

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