linux-stable.git/drivers/net/ethernet/microchip, branch linux-6.16.y

microchip: lan865x: Fix LAN8651 autoloading

2025-09-09T17:02:35+00:00

commit ca47c44d36a9ad3268d17f89789104a471c07f81 upstream.

Add missing IDs for LAN8651 devices, which are also defined in the
DT bindings.

Fixes: 5cd2340cb6a3 ("microchip: lan865x: add driver support for Microchip's LAN865X MAC-PHY")
Signed-off-by: Stefan Wahren 
Cc: stable@kernel.org
Reviewed-by: Jacob Keller 
Link: https://patch.msgid.link/20250827115341.34608-4-wahrenst@gmx.net
Signed-off-by: Jakub Kicinski 
Signed-off-by: Greg Kroah-Hartman

microchip: lan865x: Fix module autoloading

2025-09-09T17:02:35+00:00

commit c7217963eb779be0a7627dd2121152fa6786ecf7 upstream.

Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded
based on the alias from spi_device_id table. While at this, fix
the misleading variable name (spidev is unrelated to this driver).

Fixes: 5cd2340cb6a3 ("microchip: lan865x: add driver support for Microchip's LAN865X MAC-PHY")
Signed-off-by: Stefan Wahren 
Cc: stable@kernel.org
Reviewed-by: Andrew Lunn 
Reviewed-by: Jacob Keller 
Link: https://patch.msgid.link/20250827115341.34608-3-wahrenst@gmx.net
Signed-off-by: Jakub Kicinski 
Signed-off-by: Greg Kroah-Hartman

microchip: lan865x: fix missing Timer Increment config for Rev.B0/B1

2025-08-28T14:34:48+00:00

[ Upstream commit 2cd58fec912acec273cb155911ab8f06ddbb131a ]

Fix missing configuration for LAN865x silicon revisions B0 and B1 as per
Microchip Application Note AN1760 (Rev F, June 2024).

The Timer Increment register was not being set, which is required for
accurate timestamping. As per the application note, configure the MAC to
set timestamping at the end of the Start of Frame Delimiter (SFD), and
set the Timer Increment register to 40 ns (corresponding to a 25 MHz
internal clock).

Link: https://www.microchip.com/en-us/application-notes/an1760

Fixes: 5cd2340cb6a3 ("microchip: lan865x: add driver support for Microchip's LAN865X MAC-PHY")
Signed-off-by: Parthiban Veerasooran 
Reviewed-by: Vadim Fedorenko 
Link: https://patch.msgid.link/20250818060514.52795-3-parthiban.veerasooran@microchip.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

microchip: lan865x: fix missing netif_start_queue() call on device open

2025-08-28T14:34:48+00:00

[ Upstream commit 1683fd1b2fa79864d3c7a951d9cea0a9ba1a1923 ]

This fixes an issue where the transmit queue is started implicitly only
the very first time the device is registered. When the device is taken
down and brought back up again (using `ip` or `ifconfig`), the transmit
queue is not restarted, causing packet transmission to hang.

Adding an explicit call to netif_start_queue() in lan865x_net_open()
ensures the transmit queue is properly started every time the device
is reopened.

Fixes: 5cd2340cb6a3 ("microchip: lan865x: add driver support for Microchip's LAN865X MAC-PHY")
Signed-off-by: Parthiban Veerasooran 
Link: https://patch.msgid.link/20250818060514.52795-2-parthiban.veerasooran@microchip.com
Signed-off-by: Jakub Kicinski 
Signed-off-by: Sasha Levin

net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()

2025-06-19T13:32:14+00:00

Before calling lan743x_ptp_io_event_clock_get(), the 'channel' value
is checked against the maximum value of PCI11X1X_PTP_IO_MAX_CHANNELS(8).
This seems correct and aligns with the PTP interrupt status register
(PTP_INT_STS) specifications.

However, lan743x_ptp_io_event_clock_get() writes to ptp->extts[] with
only LAN743X_PTP_N_EXTTS(4) elements, using channel as an index:

    lan743x_ptp_io_event_clock_get(..., u8 channel,...)
    {
        ...
        /* Update Local timestamp */
        extts = &ptp->extts[channel];
        extts->ts.tv_sec = sec;
        ...
    }

To avoid an out-of-bounds write and utilize all the supported GPIO
inputs, set LAN743X_PTP_N_EXTTS to 8.

Detected using the static analysis tool - Svace.
Fixes: 60942c397af6 ("net: lan743x: Add support for PTP-IO Event Input External Timestamp (extts)")
Signed-off-by: Alexey Kodanev 
Reviewed-by: Jacob Keller 
Acked-by: Rengarajan S 
Link: https://patch.msgid.link/20250616113743.36284-1-aleksei.kodanev@bell-sw.com
Signed-off-by: Paolo Abeni

net: lan966x: Make sure to insert the vlan tags also in host mode

2025-05-29T13:48:37+00:00

When running these commands on DUT (and similar at the other end)
ip link set dev eth0 up
ip link add link eth0 name eth0.10 type vlan id 10
ip addr add 10.0.0.1/24 dev eth0.10
ip link set dev eth0.10 up
ping 10.0.0.2

The ping will fail.

The reason why is failing is because, the network interfaces for lan966x
have a flag saying that the HW can insert the vlan tags into the
frames(NETIF_F_HW_VLAN_CTAG_TX). Meaning that the frames that are
transmitted don't have the vlan tag inside the skb data, but they have
it inside the skb. We already get that vlan tag and put it in the IFH
but the problem is that we don't configure the HW to rewrite the frame
when the interface is in host mode.
The fix consists in actually configuring the HW to insert the vlan tag
if it is different than 0.

Reviewed-by: Maxime Chevallier 
Fixes: 6d2c186afa5d ("net: lan966x: Add vlan support.")
Signed-off-by: Horatiu Vultur 
Link: https://patch.msgid.link/20250528093619.3738998-1-horatiu.vultur@microchip.com
Signed-off-by: Paolo Abeni

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-05-28T08:11:15+00:00

Merge in late fixes to prepare for the 6.16 net-next PR.

No conflicts nor adjacent changes.

Signed-off-by: Paolo Abeni

net: lan743x: Modify the EEPROM and OTP size for PCI1xxxx devices

2025-05-28T01:18:50+00:00

Maximum OTP and EEPROM size for hearthstone PCI1xxxx devices are 8 Kb
and 64 Kb respectively. Adjust max size definitions and return correct
EEPROM length based on device. Also prevent out-of-bound read/write.

Signed-off-by: Rengarajan S 
Link: https://patch.msgid.link/20250523173326.18509-1-rengarajan.s@microchip.com
Signed-off-by: Jakub Kicinski

net: lan743x: Fix PHY reset handling during initialization and WOL

2025-05-28T00:52:01+00:00

Remove lan743x_phy_init from lan743x_hardware_init as it resets the PHY
registers, causing WOL to fail on subsequent attempts. Add a call to
lan743x_hw_reset_phy in the probe function to ensure the PHY is reset
during device initialization.

Fixes: 23f0703c125be ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Thangaraj Samynathan 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/20250526053048.287095-3-thangaraj.s@microchip.com
Signed-off-by: Jakub Kicinski

net: lan743x: rename lan743x_reset_phy to lan743x_hw_reset_phy

2025-05-28T00:52:01+00:00

rename the function to lan743x_hw_reset_phy to better describe it
operation.

Fixes: 23f0703c125be ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Thangaraj Samynathan 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/20250526053048.287095-2-thangaraj.s@microchip.com
Signed-off-by: Jakub Kicinski