There are multiple places in usb core or controller driver which returns
-EMSGSIZE when a class driver queueing urb failed, so the "Message too
long" log doesn't help much for understanding the error.
Let the musb driver to specifically print a error message when
musb_urb_enqueue() returns -EMSGSIZE.
Signed-off-by: Bin Liu <b-liu@xxxxxx>
---
drivers/usb/musb/musb_host.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index d3f50ba4bf96..1f78b4d3053e 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2247,6 +2247,10 @@ static int musb_urb_enqueue(
ok = (usb_pipein(urb->pipe) && musb->hb_iso_rx)
|| (usb_pipeout(urb->pipe) && musb->hb_iso_tx);
if (!ok) {
+ dev_err(musb->controller,
+ "high bandwidth %s (%dx%d) not supported\n",
+ musb_ep_xfertype_string(qh->type),
+ qh->hb_mult, qh->maxpacket & 0x7ff);
ret = -EMSGSIZE;
goto done;
}
--
1.9.1
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