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usb: Return -ENOENT when no devices are found

When USB finds no devices it currently returns -EPERM which bootstd does
not understand. This causes other bootdevs of the same priority to be
skipped.

Fix this by returning the correct error code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Simon Glass 10 months ago
parent
commit
4c4ccc5a04
2 changed files with 9 additions and 2 deletions
  1. 1 1
      drivers/usb/host/usb-uclass.c
  2. 8 1
      include/usb.h

+ 1 - 1
drivers/usb/host/usb-uclass.c

@@ -346,7 +346,7 @@ int usb_init(void)
 	if (controllers_initialized == 0)
 		printf("No working controllers found\n");
 
-	return usb_started ? 0 : -1;
+	return usb_started ? 0 : -ENOENT;
 }
 
 int usb_setup_ehci_gadget(struct ehci_ctrl **ctlrp)

+ 8 - 1
include/usb.h

@@ -257,7 +257,14 @@ int usb_kbd_deregister(int force);
 
 #endif
 /* routines */
-int usb_init(void); /* initialize the USB Controller */
+
+/*
+ * usb_init() - initialize the USB Controllers
+ *
+ * Returns: 0 if OK, -ENOENT if there are no USB devices
+ */
+int usb_init(void);
+
 int usb_stop(void); /* stop the USB Controller */
 int usb_detect_change(void); /* detect if a USB device has been (un)plugged */