[PATCH v4 01/13] net/r8169: fix crash in RTL8168FP init

[Howard Wang <howard_wang@realsil.com.cn>]

The rtl8168fp_ops structure was missing the hw_phy_mcu_config function
pointer, causing a NULL pointer dereference during device initialization
when the driver attempts to configure the PHY microcontroller.

Add hw_phy_mcu_config_8168fp() as a no-op function since the RTL8168FP
does not require PHY MCU configuration. This matches the pattern used
by other chip variants that don't need PHY MCU updates.

Fixes: d9ee71b5f1bc ("net/r8169: support RTL8168 series")
Cc: stable@dpdk.org

Signed-off-by: Howard Wang <howard_wang@realsil.com.cn>
---
 drivers/net/r8169/base/rtl8168fp.c     | 1 +
 drivers/net/r8169/base/rtl8168fp.h     | 1 +
 drivers/net/r8169/base/rtl8168fp_mcu.c | 6 ++++++
 3 files changed, 8 insertions(+)

diff --git a/drivers/net/r8169/base/rtl8168fp.c b/drivers/net/r8169/base/rtl8168fp.c
index b8a058bbd9..9aa3cabeb8 100644
--- a/drivers/net/r8169/base/rtl8168fp.c
+++ b/drivers/net/r8169/base/rtl8168fp.c
@@ -192,4 +192,5 @@ const struct rtl_hw_ops rtl8168fp_ops = {
 	.hw_ephy_config    = hw_ephy_config_8168fp,
 	.hw_phy_config     = hw_phy_config_8168fp,
 	.hw_mac_mcu_config = hw_mac_mcu_config_8168fp,
+	.hw_phy_mcu_config = hw_phy_mcu_config_8168fp,
 };
diff --git a/drivers/net/r8169/base/rtl8168fp.h b/drivers/net/r8169/base/rtl8168fp.h
index 4613fe9a98..194f14af4e 100644
--- a/drivers/net/r8169/base/rtl8168fp.h
+++ b/drivers/net/r8169/base/rtl8168fp.h
@@ -10,5 +10,6 @@
 extern const struct rtl_hw_ops rtl8168fp_ops;
 
 void hw_mac_mcu_config_8168fp(struct rtl_hw *hw);
+void hw_phy_mcu_config_8168fp(struct rtl_hw *hw __rte_unused);
 
 #endif
diff --git a/drivers/net/r8169/base/rtl8168fp_mcu.c b/drivers/net/r8169/base/rtl8168fp_mcu.c
index 839dcfde61..7757e5f448 100644
--- a/drivers/net/r8169/base/rtl8168fp_mcu.c
+++ b/drivers/net/r8169/base/rtl8168fp_mcu.c
@@ -268,3 +268,9 @@ hw_mac_mcu_config_8168fp(struct rtl_hw *hw)
 		break;
 	}
 }
+
+void
+hw_phy_mcu_config_8168fp(struct rtl_hw *hw __rte_unused)
+{
+	/* Do nothing */
+}
-- 
2.34.1