usb: Handle -ENODEV from usb_lowlevel_init()

As we support both Host and Device mode operation, an OTG controller
can return -ENODEV on a port which it found to be in Device mode during
Host mode scan for devices. In case -ENODEV is returned, print that the
port is not available and continue instead of screaming a bloody error
message.

Signed-off-by: Marek Vasut <marex@denx.de>

diff --git a/common/usb.c b/common/usb.c
index 60daa100522406c0b42f2012960805e1ce8157be..bd0f8d5d180fb1a72590dd341562cea4056c4253 100644 (file)
--- a/common/usb.c
+++ b/common/usb.c
@@ -34,7 +34,7 @@
 #include <asm/byteorder.h>
 #include <asm/unaligned.h>
 #include <compiler.h>
-
+#include <errno.h>
 #include <usb.h>
 #ifdef CONFIG_4xx
 #include <asm/4xx_pci.h>
@@ -60,6 +60,7 @@ int usb_init(void)
        void *ctrl;
        struct usb_device *dev;
        int i, start_index = 0;
+       int ret;
 
        dev_index = 0;
        asynch_allowed = 1;
@@ -75,7 +76,13 @@ int usb_init(void)
        for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
                /* init low_level USB */
                printf("USB%d:   ", i);
-               if (usb_lowlevel_init(i, USB_INIT_HOST, &ctrl)) {
+               ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl);
+               if (ret == -ENODEV) {   /* No such device. */
+                       puts("Port not available.\n");
+                       continue;
+               }
+
+               if (ret) {              /* Other error. */
                        puts("lowlevel init failed\n");
                        continue;
                }