From: Jimmy Assarsson <jimmyassarsson@gmail.com>
Date: Tue, 21 Nov 2017 07:22:28 +0000 (+0100)
Subject: can: kvaser_usb: ratelimit errors if incomplete messages are received
X-Git-Tag: v3.18.88~62
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29017a8bc720adcd1d0ec5df4495751511a7317c;p=thirdparty%2Fkernel%2Fstable.git

can: kvaser_usb: ratelimit errors if incomplete messages are received

commit 8bd13bd522ff7dfa0eb371921aeb417155f7a3be upstream.

Avoid flooding the kernel log with "Formate error", if incomplete message
are received.

Signed-off-by: Jimmy Assarsson <jimmyassarsson@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c
index ed9b0fbbca224..23d5f4ed6acde 100644
--- a/drivers/net/can/usb/kvaser_usb.c
+++ b/drivers/net/can/usb/kvaser_usb.c
@@ -415,8 +415,8 @@ static int kvaser_usb_wait_msg(const struct kvaser_usb *dev, u8 id,
 			}
 
 			if (pos + tmp->len > actual_len) {
-				dev_err(dev->udev->dev.parent,
-					"Format error\n");
+				dev_err_ratelimited(dev->udev->dev.parent,
+						    "Format error\n");
 				break;
 			}
 
@@ -1007,7 +1007,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb)
 		}
 
 		if (pos + msg->len > urb->actual_length) {
-			dev_err(dev->udev->dev.parent, "Format error\n");
+			dev_err_ratelimited(dev->udev->dev.parent,
+					    "Format error\n");
 			break;
 		}