Re: [PATCH] ath9k: rng: escape sleep loop when unregistering

Hi Gregory,

On Thu, Jun 23, 2022 at 10:25:26PM -0700, Gregory Erwin wrote:

Hi Jason,

I think you are on the right track, but even with this patch 'ip link set wlan0 down' blocks until the hwrng reader gives up. The reader can either be userspace (dd, cat, etc) or it can also be the rng_core module. I can replicate the hang in the two different situations, so I gathered two stack traces for 'ip' depending on the reader of hwrng:

Thanks for the traces. I'll send a v2 to you shortly.

Jason