Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote:
> From: Johannes Berg <johannes.berg@xxxxxxxxx>
>
> On older devices (before unified image!) we can end up calling
> stop_device from an rfkill interrupt. However, in stop_device
> we attempt to synchronize IRQs, which then of course deadlocks.
>
> Avoid this by checking the context, if running from the IRQ
> thread then don't synchronize. This wouldn't be correct on a
> new device since RSS is supported, but older devices only have
> a single interrupt/queue.
>
> Fixes: 37fb29bd1f90 ("wifi: iwlwifi: pcie: synchronize IRQs before NAPI")
> Reviewed-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>
> Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Patch applied to wireless.git, thanks.
400f6ebbc175 wifi: iwlwifi: pcie: don't synchronize IRQs from IRQ
--
https://patchwork.kernel.org/project/linux-wireless/patch/20231215111335.59aab00baed7.Iadfe154d6248e7f9dfd69522e5429dbbd72925d7@changeid/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
