From: Paul Barker <pbarker@konsulko.com>
Date: Thu, 3 Sep 2020 11:26:21 +0000 (+0100)
Subject: net: dsa: b53: Print err message on SW_RST timeout
X-Git-Tag: howlett/maple_spf/20210104~792^2~385^2
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=434d2312cd8057aa6972f2b39aa0b359d02af9f4;p=users%2Fjedix%2Flinux-maple.git

net: dsa: b53: Print err message on SW_RST timeout

This allows us to differentiate between the possible failure modes of
b53_switch_reset() by looking at the dmesg output.

Signed-off-by: Paul Barker <pbarker@konsulko.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index b100fad00762..5d0618e99156 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -765,8 +765,11 @@ static int b53_switch_reset(struct b53_device *dev)
 			usleep_range(1000, 2000);
 		} while (timeout-- > 0);
 
-		if (timeout == 0)
+		if (timeout == 0) {
+			dev_err(dev->dev,
+				"Timeout waiting for SW_RST to clear!\n");
 			return -ETIMEDOUT;
+		}
 	}
 
 	b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);