From b2a542bbb3081dbd64acc8929c140d196664c406 Mon Sep 17 00:00:00 2001
From: Dmitry Fleytman <dmitry@daynix.com>
Date: Tue, 5 Sep 2017 11:40:56 +0300
Subject: [PATCH] usb: Increase quirk delay for USB devices
Git-commit: b2a542bbb3081dbd64acc8929c140d196664c406
Patch-mainline: v4.14-rc4
References: bsc#1085536

Commit e0429362ab15
("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>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/usb/core/config.c | 2 +-
 drivers/usb/core/hub.c    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 4be52c602e9b..854c8d66cfbe 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -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);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 41eaf0b52518..b5c733613823 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -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
-- 
2.13.6