>From: Stephen Boyd [mailto:sboyd@xxxxxxxxxxxxxx] >On 10/21, Bjorn Andersson wrote: >> hcd_alloc_coherent() and usb_alloc_coherent() ends up allocating >> coherent memory on behalf of ci_hdrc driver. But as the ci_hdrc is >> instantiated manually it will not have any dma_mem or dma_ops >> assigned, which makes the >> dma_alloc_coherent() fail on some platforms (e.g. arm64). This patch >> solves this by assigning the dma_mem and dma_ops based on the parent's >> DeviceTree node. >> >> Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> >> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> >> --- >> >> Hi Peter, >> >> After (once more) debugging why USB doesn't work up on the 64-bit >> Qualcomm systems I realized that we never concluded on this patch. >> Unfortunately I can't find it in my mailbox either, so resending it to restart the >discussion. >> > >I thought we were going to go down the route that Arnd has been pushing[1]? That >should work, but I haven't tried it yet and there are some more fixes on top from >Sriram. I think Sriram is taking over the patch now? > Yes Stephen. I am incorporating the idea from Arnd and working on those patches. Regards, Sriram >[1] https://patchwork.kernel.org/patch/9319527/ > >-- >Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux >Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
