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usb: Increase quirk delay for USB devices

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commit b2a542bbb3 upstream.

Commit e0429362ab
("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
This commit is contained in:
Dmitry Fleytman 2017-09-05 11:40:56 +03:00 committed by Ben Hutchings
parent c95d921ebf
commit 0f87665439
2 changed files with 2 additions and 2 deletions
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2
drivers/usb/core/config.c
View File

@ -830,7 +830,7 @@ 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);

2
drivers/usb/core/hub.c
View File

@ -3552,7 +3552,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
usb_detect_quirks(udev);
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