Hello: This patch was applied to netdev/net.git (master) by David S. Miller <davem@xxxxxxxxxxxxx>: On Thu, 3 Mar 2022 12:10:27 -0600 you wrote: > There is an oddity in the way the RSR register flags propagate to the > ISR register (and the actual interrupt output) on this hardware: it > appears that RSR register bits only result in ISR being asserted if the > interrupt was actually enabled at the time, so enabling interrupts with > RSR bits already set doesn't trigger an interrupt to be raised. There > was already a partial fix for this race in the macb_poll function where > it checked for RSR bits being set and re-triggered NAPI receive. > However, there was a still a race window between checking RSR and > actually enabling interrupts, where a lost wakeup could happen. It's > necessary to check again after enabling interrupts to see if RSR was set > just prior to the interrupt being enabled, and re-trigger receive in that > case. > > [...] Here is the summary with links: - [net,v2] net: macb: Fix lost RX packet wakeup race in NAPI receive https://git.kernel.org/netdev/net/c/0bf476fc3624 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html