diff options
Diffstat (limited to 'common/cmd_usb.c')
| -rw-r--r-- | common/cmd_usb.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/common/cmd_usb.c b/common/cmd_usb.c index fdfd042ac..28c05aa20 100644 --- a/common/cmd_usb.c +++ b/common/cmd_usb.c @@ -186,7 +186,7 @@ void usb_display_conf_desc(struct usb_config_descriptor *config,struct usb_devic void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,struct usb_device *dev) { printf(" Interface: %d\n",ifdesc->bInterfaceNumber); - printf(" - Alternate Settings %d, Endpoints: %d\n",ifdesc->bAlternateSetting,ifdesc->bNumEndpoints); + printf(" - Alternate Setting %d, Endpoints: %d\n",ifdesc->bAlternateSetting,ifdesc->bNumEndpoints); printf(" - Class "); usb_display_class_sub(ifdesc->bInterfaceClass,ifdesc->bInterfaceSubClass,ifdesc->bInterfaceProtocol); printf("\n"); @@ -444,6 +444,7 @@ int do_usb (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) int i; struct usb_device *dev = NULL; + extern char usb_started; #ifdef CONFIG_USB_STORAGE block_dev_desc_t *stor_dev; #endif @@ -477,6 +478,10 @@ int do_usb (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) usb_stop(); return 0; } + if (!usb_started) { + printf("USB is stopped. Please issue 'usb start' first.\n"); + return 1; + } if (strncmp(argv[1],"tree",4) == 0) { printf("\nDevice Tree:\n"); usb_show_tree(usb_get_dev_index(0)); |