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From 03e31e5197a041857299c70bbbc461131156d434 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Tue, 21 Mar 2023 19:11:58 +0100
Subject: [PATCH] net: dsa: b53: mmap: disable phy read/write ops
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
B53 MMAP switches have a MDIO Mux bus controller which should be used instead
of phy_read() and phy_write() ops.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
drivers/net/dsa/b53/b53_mmap.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/net/dsa/b53/b53_mmap.c
+++ b/drivers/net/dsa/b53/b53_mmap.c
@@ -279,6 +279,7 @@ static int b53_mmap_probe(struct platfor
struct b53_platform_data *pdata = pdev->dev.platform_data;
struct b53_mmap_priv *priv;
struct b53_device *dev;
+ struct dsa_switch_ops *dso;
int ret;
if (!pdata && np) {
@@ -298,10 +299,19 @@ static int b53_mmap_probe(struct platfor
priv->regs = pdata->regs;
+ dso = devm_kzalloc(&pdev->dev, sizeof(*dso), GFP_KERNEL);
+ if (!dso)
+ return -ENOMEM;
+
dev = b53_switch_alloc(&pdev->dev, &b53_mmap_ops, priv);
if (!dev)
return -ENOMEM;
+ memcpy(dso, dev->ds->ops, sizeof(*dso));
+ dso->phy_read = NULL;
+ dso->phy_write = NULL;
+ dev->ds->ops = dso;
+
dev->pdata = pdata;
platform_set_drvdata(pdev, dev);
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