USB: make usb_buffer_map_sg consistent with doc

[safe/jmp/linux-2.6] / drivers / usb / core / usb.c

diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 43ee943..30dd263 100644 (file)
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -914,11 +914,11 @@ int usb_buffer_map_sg(const struct usb_device *dev, int is_in,
                        || !(bus = dev->bus)
                        || !(controller = bus->controller)
                        || !controller->dma_mask)
-               return -1;
+               return -EINVAL;
 
        /* FIXME generic api broken like pci, can't report errors */
        return dma_map_sg(controller, sg, nents,
-                       is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+                       is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE) ? : -ENOMEM;
 }
 EXPORT_SYMBOL_GPL(usb_buffer_map_sg);