openwrt/target/linux/bcm4908/patches-5.4/070-v5.10-0002-net-dsa-b53-Print-err-message-on-SW_RST-timeout.patch
Hauke Mehrtens 2464a9a8a4 kernel: bump 5.4 to 5.4.108
Refreshed all patches.

Compile-tested on: x86_64, ath79, lantiq
Runtime-tested on: x86_64, ath79

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-03-27 16:26:56 +01:00

31 lines
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Diff

From 434d2312cd8057aa6972f2b39aa0b359d02af9f4 Mon Sep 17 00:00:00 2001
From: Paul Barker <pbarker@konsulko.com>
Date: Thu, 3 Sep 2020 12:26:21 +0100
Subject: [PATCH] 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>
---
drivers/net/dsa/b53/b53_common.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -755,8 +755,11 @@ static int b53_switch_reset(struct b53_d
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);