Hi, Jerry Huang <jerry.huang@xxxxxxx> writes: >> -----Original Message----- >> From: Felipe Balbi [mailto:felipe.balbi@xxxxxxxxxxxxxxx] >> Sent: Thursday, December 08, 2016 5:46 PM >> To: Jerry Huang <jerry.huang@xxxxxxx>; stern@xxxxxxxxxxxxxxxxxxx; >> linux-usb@xxxxxxxxxxxxxxx; Mathias Nyman >> <mathias.nyman@xxxxxxxxxxxxxxx>; Arnd Bergmann <arnd@xxxxxxxx> >> Cc: Sriram Dash <sriram.dash@xxxxxxx>; Greg Kroah-Hartman >> <gregkh@xxxxxxxxxxxxxxxxxxx> >> Subject: RE: USB3.0 DWC3 can't work with latest Linux-4.9.rc7 >> >> >> 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. > Then, I want to know if this patch can be accepted by open source? Or > there is another patch to replace it? There is no other patch, yet. I can't reproduce this problem here, so you'd have to debug it and figure out what's the best way to fix it. -- balbi
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