usb: renesas_usbhs: show error reason on usbhsh_urb_enqueu()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c
index 92dcc7e..aa50eaa 100644 (file)
--- a/drivers/usb/renesas_usbhs/mod_host.c
+++ b/drivers/usb/renesas_usbhs/mod_host.c
@@ -949,12 +949,15 @@ static int usbhsh_urb_enqueue(struct usb_hcd *hcd,
 
        if (!usbhsh_is_running(hpriv)) {
                ret = -EIO;
+               dev_err(dev, "host is not running\n");
                goto usbhsh_urb_enqueue_error_not_linked;
        }
 
        ret = usb_hcd_link_urb_to_ep(hcd, urb);
-       if (ret)
+       if (ret) {
+               dev_err(dev, "urb link failed\n");
                goto usbhsh_urb_enqueue_error_not_linked;
+       }
 
        /*
         * attach udev if needed
@@ -964,6 +967,7 @@ static int usbhsh_urb_enqueue(struct usb_hcd *hcd,
                new_udev = usbhsh_device_attach(hpriv, urb);
                if (!new_udev) {
                        ret = -EIO;
+                       dev_err(dev, "device attach failed\n");
                        goto usbhsh_urb_enqueue_error_not_linked;
                }
        }
@@ -974,8 +978,10 @@ static int usbhsh_urb_enqueue(struct usb_hcd *hcd,
         */
        if (!usbhsh_ep_to_uep(ep)) {
                ret = usbhsh_endpoint_attach(hpriv, urb, mem_flags);
-               if (ret < 0)
+               if (ret < 0) {
+                       dev_err(dev, "endpoint attach failed\n");
                        goto usbhsh_urb_enqueue_error_free_device;
+               }
        }
 
        /*
@@ -989,8 +995,10 @@ static int usbhsh_urb_enqueue(struct usb_hcd *hcd,
                else
                        break;
        }
-       if (ret < 0)
+       if (ret < 0) {
+               dev_err(dev, "pipe attach failed\n");
                goto usbhsh_urb_enqueue_error_free_endpoint;
+       }
 
        /*
         * push packet