[PATCH net-next V2 13/16] net: fec: print more debug info in fec_timeout

On Fri, 2016-03-04 at 09:05 -0700, Troy Kisky wrote:

On 3/4/2016 3:06 AM, Fugang Duan wrote:

quoted

From: Troy Kisky <redacted> Sent: Thursday, February 25, 2016 8:37 AM

[]

quoted

quoted

Print the current interrupt flags and mask and the interrupt state during the last
interrupt in fec_timeout.

[]

quoted

quoted

diff --git a/drivers/net/ethernet/freescale/fec_main.c

[]

quoted

quoted

@@ -1107,6 +1107,9 @@ fec_timeout(struct net_device *ndev)

?	int i;
?	uint events = 0;

+	pr_err("%s: last=%x %x, mask %x\n", __func__, fep->last_ievents,
+	???????readl(fep->hwp + FEC_IEVENT), readl(fep->hwp + FEC_IMASK));
+

pr_err() -> netdev_err()

Sounds good

This seems like debugging information rather than
an error a user can do anything with and if there's
a timeout, how likely is it that the hardware is
hosed and this would? repetitively and unnecessarily
fill up logs?

So maybe netdev_dbg and net_ratelimit() too.

	if (net_ratelimit()
		netdev_<level>(etc...)