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authorBin Liu <b-liu@ti.com>2017-08-24 11:38:34 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-08-28 10:51:55 +0200
commit1bff25eafa451c6210d6dfdff63e39c55c96a3e3 (patch)
tree8e5c87efc3c74587e72dfab7fb2551f24fdb6fe5
parenta2f656060b88241a22afb5927e433a126f1e151e (diff)
usb: musb: print an error message when high bandwidth is unsupported
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@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/musb/musb_host.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 605167d81676..b17450a59882 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2248,6 +2248,10 @@ 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;
}