usb: Do not log an error when no devices is plugged into a root-hub-less hcd

Before this commit u-boot would print the following on boot with musb and
no usb device plugged in:

starting USB...
USB0:   Port not available.
USB error: all controllers failed lowlevel init

This commit changes this to:

starting USB...
USB0:   Port not available.

Which is the correct thing to do since the low-level init went fine.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/common/usb.c b/common/usb.c
index 736cd9f..1eda099 100644 (file)
--- a/common/usb.c
+++ b/common/usb.c
@@ -59,6 +59,7 @@ int usb_init(void)
        void *ctrl;
        struct usb_device *dev;
        int i, start_index = 0;
+       int controllers_initialized = 0;
        int ret;
 
        dev_index = 0;
@@ -78,6 +79,7 @@ int usb_init(void)
                ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl);
                if (ret == -ENODEV) {   /* No such device. */
                        puts("Port not available.\n");
+                       controllers_initialized++;
                        continue;
                }
 
@@ -89,6 +91,7 @@ int usb_init(void)
                 * lowlevel init is OK, now scan the bus for devices
                 * i.e. search HUBs and configure them
                 */
+               controllers_initialized++;
                start_index = dev_index;
                printf("scanning bus %d for devices... ", i);
                dev = usb_alloc_new_device(ctrl);
@@ -110,12 +113,10 @@ int usb_init(void)
 
        debug("scan end\n");
        /* if we were not able to find at least one working bus, bail out */
-       if (!usb_started) {
+       if (controllers_initialized == 0)
                puts("USB error: all controllers failed lowlevel init\n");
-               return -1;
-       }
 
-       return 0;
+       return usb_started ? 0 : -1;
 }
 
 /******************************************************************************