Hi, Jerry Huang <jerry.huang@xxxxxxx> writes: [...] >> >> >> oh, it's the DMA thing. We have patches going to next for this. >> >> >> Arnd, do you know if next has all missing pieces? There was >> >> >> something pending on XHCI IIRC, right? >> >> > So, there are some patches for this issue? Where can I find it? I >> >> > need these >> >> patches for my work. >> >> >> >> https://lkml.org/lkml/2016/11/17/339 >> > You means these below 6 patches? They have been applied to Linux-4.9- >> rc8. >> > Based on Linux-4.9-rc8, I got the error when I connect USB3.0 disk to board >> (USB2.0 disk works well): >> > [ 16.360257] usb 4-1: device descriptor read/8, error -61 >> > So, I think all these 6 patches did not set the USB3.0 DMA coherent >> > correctly, and we need another patch to handle it. >> >> okay, please prepare one such patch :-) > We still need this patch, after applying it to Linux-4.9-rc8, the USB3.0 can work well. > https://patches.linaro.org/patch/65892/ > dwc3 initiated xhci probe problem in arm64 4.4 kernel due to DMA setup you're hiding the actual problem. The hole idea for Arnd's work was to fix the problem for all users, not only OF. -- balbi
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