On Wed, Aug 18, 2021 at 10:37 AM Fabio Estevam <festevam@xxxxxxxxx> wrote: > > Hi Christoph, > > On Wed, Aug 18, 2021 at 10:28 AM Christoph Hellwig <hch@xxxxxx> wrote: > > > > On Wed, Aug 18, 2021 at 06:31:19AM -0300, Fabio Estevam wrote: > > > Correct, on i.MX7 the ath10k Wifi chip connects via SDIO. > > > > > > Is there a way to avoid the WARN_ON_ONCE(!dev->coherent_dma_mask) > > > to happen in this case? > > > > The way to avoid it is by stoppind to use dma_alloc_attrs/coherent > > on a device that is not DMA capable. > > Understood, thanks. > > Maybe something like this (untested)? > https://pastebin.com/xTZqtRqD Tested it on the board and this seems to work fine. I will submit a proper patch. Thanks
