[PATCH net v2 00/12] net: au1000: Bug fixes

[Florian Fainelli <f.fainelli@gmail.com>]

This patch series contains bug fixes that were found during code
inspection and also during fixing the open/close/open issue that was met
on the MTX-1 platform.

These patches were tested on a Meshcube MTX-1 board using targeted tests
to ensure the multicast and open/close/open bugs were fixed.

 Changes since v1:
• Rebased onto current net and added the Alchemy PROM Ethernet-address
  lifetime fix needed to boot MTX-1.
• Reset the MAC after PHY/MDIO teardown, since final MDIO accesses can
  re-enable it. Avoid accessing MAC control registers when its clock is
  already disabled.
• Use sleepable polling for MDIO write completion instead of millisecond
  busy-waits.
• Correct TX reclaim ordering by advancing tx_tail when submission
  reclaims a completed descriptor. Consume transmitted skbs outside the
  lock using an IRQ-safe helper.
• Restore receive filtering before enabling RX, holding the address-list
  and device locks to keep the programmed filter consistent.
• Rework startup ordering to resume the PHY synchronously, initialize
  the MAC, then start the PHY state machine. Clear cached link state on
  open and use acknowledged link/duplex state under the device lock.
• Move the LAN83C183 recovery-delay patch before the MAC/PHY sequencing
  change.
• Add a TX length check to prevent oversized packets from overflowing
  the DMA bounce buffer.

Rebuilt the kernel and root filesystem and regression-tested on MTX-1.
All 11 boot-smoke checks passed, including 15 down/up cycles across
normal, promiscuous and all-multicast modes, opened/closed and
never-opened removal/rebind, and connectivity recovery. No kernel
warnings or errors were detected.

Florian Fainelli (12):
  net: au1000: recycle RX descriptors on allocation failure
  net: au1000: clear all-multicast mode when restoring hash filtering
  net: au1000: disconnect the PHY before freeing the MDIO bus
  net: au1000: report MDIO transaction timeouts
  net: au1000: serialize TX completion with packet submission
  net: au1000: assign a valid MAC address without platform data
  net: au1000: fix buffer descriptor free list insertion
  net: au1000: restore receive filtering before enabling RX
  net: au1000: restore RX buffer addresses when restarting the MAC
  net: phy: smsc: wait for LAN83C183 power-down recovery
  net: au1000: keep the MAC stopped until the PHY link is ready
  net: au1000: reject frames larger than the TX bounce buffer

 drivers/net/ethernet/amd/au1000_eth.c | 140 ++++++++++++++++++++------
 drivers/net/phy/Kconfig               |   2 +-
 drivers/net/phy/smsc.c                |  26 +++++
 3 files changed, 134 insertions(+), 34 deletions(-)

-- 
2.53.0