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Message-Id: <20250531101308.155757-6-noltari@gmail.com>
Date: Sat, 31 May 2025 12:13:03 +0200
From: Álvaro Fernández Rojas <noltari@...il.com>
To: jonas.gorski@...il.com,
florian.fainelli@...adcom.com,
andrew@...n.ch,
olteanv@...il.com,
davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
vivien.didelot@...il.com,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
dgcbueu@...il.com
Cc: Álvaro Fernández Rojas <noltari@...il.com>
Subject: [RFC PATCH 05/10] net: dsa: b53: prevent DIS_LEARNING access on BCM5325
BCM5325 doesn't implement DIS_LEARNING register so we should avoid reading
or writing it.
Fixes: f9b3827ee66c ("net: dsa: b53: Support setting learning on port")
Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
---
drivers/net/dsa/b53/b53_common.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 6b2ad82aa95f..9667d4107139 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -593,6 +593,9 @@ static void b53_port_set_learning(struct b53_device *dev, int port,
{
u16 reg;
+ if (is5325(dev))
+ return;
+
b53_read16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, ®);
if (learning)
reg &= ~BIT(port);
--
2.39.5
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