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SubjectRe: [PATCH v2] ath9k: sleep for less time when unregistering hwrng
Hi Gregory,

On Sat, Jun 25, 2022 at 2:13 AM Gregory Erwin <> wrote:
> This patch is working as you described. Trying to read from /dev/hwrng
> consistently blocks for only 1.3s before returning an IO error. The longest
> that I observed 'ip link set wlan0 down' to block was also about 1.3s,
> and that was immediately after 'cat /dev/hwrng'. Additionally, the longest
> duration that I observed for wiphy_suspend() to return was just under 100ms.
> Tested-by: Gregory Erwin <>

Great, thanks for testing. I think that barring more invasive changes
to the hwrng subsystem, a heuristic approach like this is the best
we're going to do inside the ath9k driver itself.

So Toke/Kalle - can you queue this up?


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