kernel/git/next/linux-next.git/drivers/net/ethernet/renesas, branch master

net: renesas: rswitch: Remove obsolete 32-bit DMA mask fallback

2026-09-08T23:46:27+00:00

The DMA API guarantees support for masks of 32 bits or wider and explicitly identifies retrying a 32-bit mask after a wider request as incorrect: https://docs.kernel.org/core-api/dma-api-howto.html#dma-addressing-capabilities Remove the obsolete fallback while retaining the error check so that a genuine DMA setup failure still aborts initialization. Signed-off-by: Ruizhe Zhou Link: https://patch.msgid.link/20260903084339.870562-14-zhouruizhe@resnics.com Signed-off-by: Jakub Kicinski

net: ethernet: renesas: rswitch: fix device_node refcount leak in rswitch_get_port_node()

2026-08-24T18:58:22+00:00

On an of_property_read_u32() failure, rswitch_get_port_node() set port to NULL and jumped to the out label before releasing the reference the for_each_available_child_of_node() iterator was holding on it. Once port was overwritten with NULL, that reference could never be released since out: only put "ports", the parent node. Rework the function around for_each_available_child_of_node_scoped() instead of adding a manual of_node_put(), so the iterator's reference is dropped automatically on every exit path. Since port is the function's return value, take an explicit reference with of_node_get() on the match before breaking out of the loop. Signed-off-by: Manush Prajwal Link: https://patch.msgid.link/6a882352.ee10049a.267d65.7a31@mx.google.com Signed-off-by: Jakub Kicinski

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

2026-08-18T17:42:41+00:00

Merge in late fixes in preparation for the net-next PR. Conflicts: drivers/dpll/dpll_core.c drivers/dpll/dpll_netlink.c 33f016b23a219 ("dpll: fix NULL deref in dpll_device_ops() during teardown race") b1d0c412088e3 ("dpll: add STATE_CONNECTED_OVERRIDE pin capability") https://lore.kernel.org/aoR9YYY2P5--3x0N@sirena.org.uk https://lore.kernel.org/aoR9VmKllVGwmQn_@sirena.org.uk No adjacent changes. Signed-off-by: Jakub Kicinski

net: ravb: serialize PTP clock teardown

2026-08-17T22:43:17+00:00

ravb_ptp_interrupt() can race with ravb_ptp_stop() and pass the clock to ptp_clock_event() while ptp_clock_unregister() is freeing it. This can lead to a use-after-free. Use READ_ONCE() and WRITE_ONCE() for lockless access to the clock pointer. Atomically detach it with xchg() before disabling PTP interrupts, then synchronize all IRQs which can invoke ravb_ptp_interrupt() before unregistering the detached clock. A handler which read the old pointer completes before the clock is unregistered, while later handlers read NULL and skip the event. Fixes: a0d2f20650e8 ("Renesas Ethernet AVB PTP clock driver") Cc: stable@vger.kernel.org Signed-off-by: Xuanqiang Luo Link: https://patch.msgid.link/20260811103733.62599-3-xuanqiang.luo@linux.dev Signed-off-by: Jakub Kicinski

net: ravb: avoid dereferencing an invalid PTP clock

2026-08-17T22:43:17+00:00

The PTP clock is unavailable before the first open, so querying its index can dereference a NULL pointer. Registration failures can also leave an error pointer in priv->ptp.clock. Cache the PHC index separately and report -1 while no clock is registered. Normalize registration errors to NULL and preserve the static timestamping capabilities. Fixes: a0d2f20650e8 ("Renesas Ethernet AVB PTP clock driver") Cc: stable@vger.kernel.org Reviewed-by: Vadim Fedorenko Signed-off-by: Xuanqiang Luo Link: https://patch.msgid.link/20260811103733.62599-2-xuanqiang.luo@linux.dev Signed-off-by: Jakub Kicinski

net: ethernet: remove conditional return with no effect

2026-07-30T11:04:03+00:00

Both branches of the check return the same value, so the check has no effect. Remove it and return the value directly. This is the result of running the Coccinelle script from scripts/coccinelle/misc/cond_return_no_effect.cocci. Signed-off-by: Sang-Heon Jeon Reviewed-by: Niklas Söderlund Reviewed-by: Arthur Kiyanovski Reviewed-by: Ioana Ciornei # for dpaa2-switch Link: https://patch.msgid.link/20260725150852.859188-3-ekffu200098@gmail.com Signed-off-by: Paolo Abeni

net: ethernet: ravb: Do not check URAM suspension when WoL is active

2026-05-13T01:46:19+00:00

When updating the driver to match latest datasheet to suspend access to URAM when suspending DMA transfers a corner-case was missed, URAM access will not be suspended if WoL is enabled. This lead to the error message (correctly) being triggered as URAM access is not suspended even tho it's requested as part of stopping DMA. Avoid checking if URAM access is suspended and printing the error message if WoL is enabled when we suspend the system, as we know it will not be. Reported-by: Geert Uytterhoeven Closes: https://lore.kernel.org/all/CAMuHMdWnjV%3DHGE1o08zLhUfTgOSene5fYx1J5GG10mB%2BToq8qg@mail.gmail.com/ Fixes: 353d8e7989b6 ("net: ethernet: ravb: Suspend and resume the transmission flow") Signed-off-by: Niklas Söderlund Reviewed-by: Sai Krishna Tested-by: Geert Uytterhoeven Signed-off-by: Jakub Kicinski

net: rtsn: fix mdio_node leak in rtsn_mdio_alloc()

2026-05-07T00:42:50+00:00

of_get_child_by_name() takes a reference. The rtsn_reset() and rtsn_change_mode() failure paths jump to out_free_bus and leak mdio_node. Add out_put_node to drop it before falling through. Fixes: b0d3969d2b4d ("net: ethernet: rtsn: Add support for Renesas Ethernet-TSN") Signed-off-by: Shitalkumar Gandhi Reviewed-by: Geert Uytterhoeven Reviewed-by: Andrew Lunn Reviewed-by: Niklas Söderlund Link: https://patch.msgid.link/20260505123236.406000-1-shitalkumar.gandhi@cambiumnetworks.com Signed-off-by: Jakub Kicinski

net: ethernet: ravb: Suspend and resume the transmission flow

2026-04-03T23:04:28+00:00

The current driver does not follow the latest datasheet and does not suspend the flow when stopping DMA and resume it when starting. Update the driver to do so. Signed-off-by: Yoshihiro Shimoda [Niklas: Rebase from BSP and reword commit message] Signed-off-by: Niklas Söderlund Link: https://patch.msgid.link/20260401183608.1852225-1-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Jakub Kicinski

net: ethernet: ravb: Disable interrupts when closing device

2026-03-11T02:37:21+00:00

Disable E-MAC interrupts when closing the device. Signed-off-by: Yoshihiro Shimoda [Niklas: Rebase from BSP and reword commit message] Signed-off-by: Niklas Söderlund Link: https://patch.msgid.link/20260307095532.2118495-1-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Jakub Kicinski