Luca Coelho <luca@xxxxxxxxx> wrote: > From: Johannes Berg <johannes.berg@xxxxxxxxx> > > The TR/CR tail data are meant to be per-queue-arrays, however, > we allocate them completely wrong (we have a separate allocation > per queue). > > Looking at this more closely, it turns out that the hardware > never uses these - we have a separate free list per RX queue > and maintain a write pointer for that in a register, and the > RX itself is indicated in the RB status (rb_stts) DMA region. > > Despite nothing using the tail pointers, the hardware will > unconditionally access them to write updates, even when we aren't > using CRs/TRs. > > Give it dummy values that we never use/update so it can do that > without causing trouble. > > Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> > Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx> Patch applied to iwlwifi-next.git, thanks. a5575a54df00 iwlwifi: pcie: remove TR/CR tail allocations
