From 38d7f6885164b114fdfae84bc18397e8fced9b00 Mon Sep 17 00:00:00 2001 From: Xenia Ragiadakou Date: Wed, 4 Sep 2013 17:24:45 +0300 Subject: [PATCH] usbcore: check usb device's state before sending a Set SEL control transfer Set SEL control urbs cannot be sent to a device in unconfigured state. This patch adds a check in usb_req_set_sel() to ensure the usb device's state is USB_STATE_CONFIGURED. Signed-off-by: Xenia Ragiadakou Reported-by: Martin MOKREJS Suggested-by: Sarah Sharp Signed-off-by: Sarah Sharp --- drivers/usb/core/hub.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index dde4c83516a1..e6b682c6c236 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3426,6 +3426,9 @@ static int usb_req_set_sel(struct usb_device *udev, enum usb3_link_state state) unsigned long long u2_pel; int ret; + if (udev->state != USB_STATE_CONFIGURED) + return 0; + /* Convert SEL and PEL stored in ns to us */ u1_sel = DIV_ROUND_UP(udev->u1_params.sel, 1000); u1_pel = DIV_ROUND_UP(udev->u1_params.pel, 1000);