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-Url: https://git.stricted.de/?a=commitdiff_plain;h=6f4fd93f349036ebeb136838444336f376f0e7db;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.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 d87e330a20b3..f95945915d20 100644
--- a/drivers/net/can/usb/kvaser_usb.c
+++ b/drivers/net/can/usb/kvaser_usb.c
@@ -609,8 +609,8 @@ 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;
 			}
 
@@ -1353,7 +1353,8 @@ 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;
 		}