Re: [PATCH] wifi: brcmfmac: avoid sleeping tx locks in netpoll context

[Karl Mehltretter]

On Tue, Oct 06, 2026 at 10:27:27AM +0100, Arend van Spriel wrote:
> > 
> > Lockdep instrumentation in fcmode=1 and 2 confirmed that cleanup enters
> > without txq_lock.
> 
> This is an observation unrelated to the patch, right? You mentioned in the
> patch it only covers fcmode=0, right?
> 

Yes, the cleanup observation is unrelated to the fcmode=0 fix. I
mentioned it to explain why I kept brcmu_pktq_penq() for normal calls.

I'm looking at a separate brcmfmac FWS-path RT/netpoll fix for modes
1 and 2. The prototype defers IRQ-disabled transmit to the FWS worker.

Are modes 1 and 2 used or recommended on SDIO devices? That would
help me prioritise the follow-up.

Thanks,
Karl