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 <burzalodowa@gmail.com>
Reported-by: Martin MOKREJS <mmokrejs@gmail.com>
Suggested-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index dde4c83..e6b682c 100644 (file)
--- 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);