mirror of
https://git.openwrt.org/openwrt/openwrt.git
synced 2024-11-24 14:06:15 +00:00
449b5701d7
Backport at803x kernel panic fix merged upstream for kernel 6.1 and 6.6. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
46 lines
1.6 KiB
Diff
46 lines
1.6 KiB
Diff
From 6a4aee277740d04ac0fd54cfa17cc28261932ddc Mon Sep 17 00:00:00 2001
|
|
From: Christian Marangi <ansuelsmth@gmail.com>
|
|
Date: Mon, 25 Mar 2024 20:06:19 +0100
|
|
Subject: [PATCH] net: phy: qcom: at803x: fix kernel panic with at8031_probe
|
|
|
|
On reworking and splitting the at803x driver, in splitting function of
|
|
at803x PHYs it was added a NULL dereference bug where priv is referenced
|
|
before it's actually allocated and then is tried to write to for the
|
|
is_1000basex and is_fiber variables in the case of at8031, writing on
|
|
the wrong address.
|
|
|
|
Fix this by correctly setting priv local variable only after
|
|
at803x_probe is called and actually allocates priv in the phydev struct.
|
|
|
|
Reported-by: William Wortel <wwortel@dorpstraat.com>
|
|
Cc: <stable@vger.kernel.org>
|
|
Fixes: 25d2ba94005f ("net: phy: at803x: move specific at8031 probe mode check to dedicated probe")
|
|
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
|
|
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
|
|
Link: https://lore.kernel.org/r/20240325190621.2665-1-ansuelsmth@gmail.com
|
|
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
|
|
---
|
|
drivers/net/phy/qcom/at803x.c | 4 +++-
|
|
1 file changed, 3 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/net/phy/qcom/at803x.c
|
|
+++ b/drivers/net/phy/qcom/at803x.c
|
|
@@ -797,7 +797,7 @@ static int at8031_parse_dt(struct phy_de
|
|
|
|
static int at8031_probe(struct phy_device *phydev)
|
|
{
|
|
- struct at803x_priv *priv = phydev->priv;
|
|
+ struct at803x_priv *priv;
|
|
int mode_cfg;
|
|
int ccr;
|
|
int ret;
|
|
@@ -806,6 +806,8 @@ static int at8031_probe(struct phy_devic
|
|
if (ret)
|
|
return ret;
|
|
|
|
+ priv = phydev->priv;
|
|
+
|
|
/* Only supported on AR8031/AR8033, the AR8030/AR8035 use strapping
|
|
* options.
|
|
*/
|