From: Bin Liu <b-liu@ti.com>
Date: Thu, 24 Aug 2017 16:38:33 +0000 (-0500)
Subject: usb: musb: print an error message when hwep alloc failed
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a2f656060b88241a22afb5927e433a126f1e151e;p=linux.git

usb: musb: print an error message when hwep alloc failed

Print an error message with qh maxpacket size and hb_mult when hwep
allocation failed, so we have a better idea why it is failed.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 3344ffd5bb137..605167d816760 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2152,6 +2152,10 @@ static int musb_schedule(
 				(USB_SPEED_HIGH == qh->dev->speed) ? 8 : 4;
 		goto success;
 	} else if (best_end < 0) {
+		dev_err(musb->controller,
+				"%s hwep alloc failed for %dx%d\n",
+				musb_ep_xfertype_string(qh->type),
+				qh->hb_mult, qh->maxpacket);
 		return -ENOSPC;
 	}