From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Fabio Estevam <festevam@denx.de>, Andrew Lunn <andrew@lunn.ch>,
Jakub Kicinski <kuba@kernel.org>, Sasha Levin <sashal@kernel.org>,
hkallweit1@gmail.com, davem@davemloft.net, edumazet@google.com,
pabeni@redhat.com, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 48/55] net: phy: micrel: Allow probing without .driver_data
Date: Mon, 30 May 2022 09:46:54 -0400 [thread overview]
Message-ID: <20220530134701.1935933-48-sashal@kernel.org> (raw)
In-Reply-To: <20220530134701.1935933-1-sashal@kernel.org>
From: Fabio Estevam <festevam@denx.de>
[ Upstream commit f2ef6f7539c68c6bd6c32323d8845ee102b7c450 ]
Currently, if the .probe element is present in the phy_driver structure
and the .driver_data is not, a NULL pointer dereference happens.
Allow passing .probe without .driver_data by inserting NULL checks
for priv->type.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220513114613.762810-1-festevam@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/phy/micrel.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 18cc5e4280e8..721153dcfd15 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -282,7 +282,7 @@ static int kszphy_config_reset(struct phy_device *phydev)
}
}
- if (priv->led_mode >= 0)
+ if (priv->type && priv->led_mode >= 0)
kszphy_setup_led(phydev, priv->type->led_mode_reg, priv->led_mode);
return 0;
@@ -298,10 +298,10 @@ static int kszphy_config_init(struct phy_device *phydev)
type = priv->type;
- if (type->has_broadcast_disable)
+ if (type && type->has_broadcast_disable)
kszphy_broadcast_disable(phydev);
- if (type->has_nand_tree_disable)
+ if (type && type->has_nand_tree_disable)
kszphy_nand_tree_disable(phydev);
return kszphy_config_reset(phydev);
@@ -939,7 +939,7 @@ static int kszphy_probe(struct phy_device *phydev)
priv->type = type;
- if (type->led_mode_reg) {
+ if (type && type->led_mode_reg) {
ret = of_property_read_u32(np, "micrel,led-mode",
&priv->led_mode);
if (ret)
@@ -960,7 +960,8 @@ static int kszphy_probe(struct phy_device *phydev)
unsigned long rate = clk_get_rate(clk);
bool rmii_ref_clk_sel_25_mhz;
- priv->rmii_ref_clk_sel = type->has_rmii_ref_clk_sel;
+ if (type)
+ priv->rmii_ref_clk_sel = type->has_rmii_ref_clk_sel;
rmii_ref_clk_sel_25_mhz = of_property_read_bool(np,
"micrel,rmii-reference-clock-select-25-mhz");
--
2.35.1
next prev parent reply other threads:[~2022-05-30 14:21 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220530134701.1935933-1-sashal@kernel.org>
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 02/55] mwifiex: add mutex lock for call in mwifiex_dfs_chan_sw_work_queue Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 03/55] b43legacy: Fix assigning negative value to unsigned variable Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 04/55] b43: " Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 05/55] ipw2x00: Fix potential NULL dereference in libipw_xmit() Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 06/55] ipv6: fix locking issues with loops over idev->addr_list Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 14/55] ath9k: fix QCA9561 PA bias level Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 27/55] ipv6: Don't send rs packets to the interface of ARPHRD_TUNNEL Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 28/55] net/mlx5: fs, delete the FTE when there are no rules attached to it Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 30/55] mlxsw: spectrum_dcb: Do not warn about priority changes Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 34/55] net: remove two BUG() from skb_checksum_help() Sasha Levin
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 41/55] rtlwifi: Use pr_warn instead of WARN_ONCE Sasha Levin
2022-05-30 13:46 ` Sasha Levin [this message]
2022-05-30 13:46 ` [PATCH AUTOSEL 5.4 53/55] rxrpc: Return an error to sendmsg if call failed Sasha Levin
2022-05-30 13:47 ` [PATCH AUTOSEL 5.4 54/55] eth: tg3: silence the GCC 12 array-bounds warning Sasha Levin
2022-05-30 13:47 ` [PATCH AUTOSEL 5.4 55/55] selftests/bpf: fix btf_dump/btf_dump due to recent clang change Sasha Levin
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