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From 057bcf15db8e625276ddf02b2b7c668a3cb43f81 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Sun, 4 Sep 2022 23:46:24 +0200
Subject: [net PATCH] net: dsa: qca8k: fix NULL pointer dereference for
of_device_get_match_data
of_device_get_match_data is called on priv->dev before priv->dev is
actually set. Move of_device_get_match_data after priv->dev is correctly
set to fix this kernel panic.
Fixes: 3bb0844e7bcd ("net: dsa: qca8k: cache match data to speed up access")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
drivers/net/dsa/qca/qca8k-8xxx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/dsa/qca/qca8k-8xxx.c
+++ b/drivers/net/dsa/qca/qca8k-8xxx.c
@@ -1835,9 +1835,9 @@ qca8k_sw_probe(struct mdio_device *mdiod
if (!priv)
return -ENOMEM;
- priv->info = of_device_get_match_data(priv->dev);
priv->bus = mdiodev->bus;
priv->dev = &mdiodev->dev;
+ priv->info = of_device_get_match_data(priv->dev);
priv->reset_gpio = devm_gpiod_get_optional(priv->dev, "reset",
GPIOD_ASIS);
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