On Mon, Jan 18, 2021 at 5:05 AM Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> wrote: <> > True, good point, dma_wmb() should be enough here. > In fact most other wmb()s in xhci could be turned into dma_wmb(). FWIW I've confirmed in my testing that dma_wmb() does indeed also solve the problem.
