1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 1b1846e6473b..89ebe6a23a90 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1176,6 +1176,7 @@ static int choose_configuration(struct usb_device *udev)
 {
         int i;
         int num_configs;
+        int insufficient_power = 0;
         struct usb_host_config *c, *best;
 
         best = NULL;
@@ -1228,8 +1229,10 @@ static int choose_configuration(struct usb_device *udev)
                  */
 
                 /* Rule out configs that draw too much bus current */
-                if (c->desc.bMaxPower * 2 > udev->bus_mA)
+                if (c->desc.bMaxPower * 2 > udev->bus_mA) {
+                        insufficient_power++;
                         continue;
+                }
 
                 /* If the first config's first interface is COMM/2/0xff
                  * (MSFT RNDIS), rule it out unless Linux has host-side
@@ -1263,6 +1266,11 @@ static int choose_configuration(struct usb_device *udev)
                         best = c;
         }
 
+        if (insufficient_power > 0)
+                dev_info(&udev->dev, "rejected %d configuration%s "
+                        "due to insufficient available bus power\n",
+                        insufficient_power, plural(insufficient_power));
+
         if (best) {
                 i = best->desc.bConfigurationValue;
                 dev_info(&udev->dev,