Hi, Jerry Huang <jerry.huang@xxxxxxx> writes: >> Jerry Huang <jerry.huang@xxxxxxx> writes: >> > Hi, Balbi, >> > Sorry for later responding. >> > I tested Linux 4.8, 4.7, 4.6 and 4.5, has the same issue: >> > [ 0.756166] xhci-hcd: probe of xhci-hcd.0.auto failed with error -5 >> > >> > Then I found one patch (dwc3 initiated xhci probe problem in arm64 4.4 >> kernel due to DMA setup) as below link, and I applied this patch to Linux-4.5, >> the USB3.0 worked well! Therefore I applied this patch to Linux-4.9-rc7, and >> the USB3.0 works well, too! Which used of_dma_configure(&xhci->dev, >> dwc->dev->of_node) to set dma. >> > https://patches.linaro.org/patch/65892/ >> > >> > However, in Linux-4.9-rc8, I found these 6 patches applied: >> > https://patchwork.kernel.org/patch/9434163/ >> > https://patchwork.kernel.org/patch/9434155/ >> > https://patchwork.kernel.org/patch/9434131/ >> > https://patchwork.kernel.org/patch/9434165/ >> > https://patchwork.kernel.org/patch/9434167/ >> > https://patchwork.kernel.org/patch/9434133/ >> > and the commit ID are: >> > 9863f279c1d48e366a179e76683247f239b30975 >> > 0abcfafea32452f1d07901320efa8c17470dbeed >> > ec3a36d441f2adcb8a0d3f6534ac488f2202c87a >> > e9d10c536b26732d38d59fa3639b85bcd819837e >> > 60478aead82d761c71a2a402b3fd2817af9e57ac >> > 21f57eb38129042d2910d1e9b5fd36f3eea93637 >> > >> > And I got the below error when I attached one USB3.0 disk (Just USB2.0 >> disk can work). From above 6 patches, it seems remove >> dma_set_coherent_mask from file drivers/usb/dwc3/host.c. >> > >> > usb 4-1: new SuperSpeed USB device number 2 using xhci-hcd >> > [ 16.224264] usb 4-1: device descriptor read/8, error -61 >> > [ 16.336179] usb 4-1: new SuperSpeed USB device number 2 using xhci- >> hcd >> > [ 16.360257] usb 4-1: device descriptor read/8, error -61 >> > [ 16.652196] usb 4-1: new SuperSpeed USB device number 3 using xhci- >> hcd >> > [ 16.676256] usb 4-1: device descriptor read/8, error -61 >> > [ 16.788179] usb 4-1: new SuperSpeed USB device number 3 using xhci- >> hcd >> > [ 16.812255] usb 4-1: device descriptor read/8, error -61 >> > >> > So, how to handle this issue? >> >> 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 -- balbi
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