net: bcmasp: fix lost TX wakeup race with lockless queue API

netif_stop_queue() in bcmasp_xmit() raced with netif_wake_queue() in
bcmasp_tx_poll(): a reclaim landing between the ring-full check and
the stop call left the queue stopped despite free descriptors,
hanging TX until timeout.

Switch to netif_txq_maybe_stop()/netif_txq_completed_wake() (the
lockless TX queue API, which also brings in BQL), replace
tx_spb_ring_full() with a live bcmasp_tx_avail() count.

This issue was discovered using LLM and is only theoretical.
Tested on a BCM74110 that no regressions were encountered.

Cc: stable+noautosel@kernel.org # LLM report + LLM fix, not seen in real life
Fixes: 490cb412007d ("net: bcmasp: Add support for ASP2.0 Ethernet controller")
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Reviewed-by: Nicolai Buchwitz <nb@tipi-net.de>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260929203400.1588868-1-justin.chen@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions