On Sun, Sep 01, 2019 at 11:22:26AM -0700, Guenter Roeck wrote: > On Sat, Aug 31, 2019 at 12:36:13AM +1000, Stephen Rothwell wrote: > > Hi all, > > > > Changes since 20190829: > > > > The compiler-attributes tree gained a build failure for which I reverted > > a commit. > > > > The arm-soc tree gained a conflict against the arm tree. > > > > The csky tree gained a conflict against the dma-mapping tree. > > > > The fuse tree gained a conflict against the fsverity tree. > > > > The vfs tree gained conflicts against the fuse tree. > > > > The pci tree gained a build failure for which I revereted a commit. > > > > The net-next tree still had its build failure for which I applied a patch. > > It also gained a conflict against the net tree. > > > > The regulator tree still has its build failure for which I reverted > > a commit. > > > > The keys tree still has its build failure so I used the version from > > next-20190828. > > > > The driver-core tree lost its build failure. > > > > The staging tree got conflicts against the net-next and usb trees. > > > > The akpm-current tree gained a build failure due to an interaction with > > the hmm tree for which I applied a patch. > > > > Something in the fixup patch seems to be wrong. I get the following > error with sh4 boot tests when booting from usb. > > sm501-usb sm501-usb: OHCI Unrecoverable Error, disabled > sm501-usb sm501-usb: HC died; cleaning up > > Unfortunately, bisect doesn't help much (see below). Reverting the fixup > patch as well as the offending patch (plus a context patch) alone does > not help either. Further analysis shows that the problem exists since > at least next-20190823. Another round of bisect on next-20190827 suggests > another culprit (see second bisect below). Reverting all the offending > patches doesn't help either, though, only result in a different error. > > usb 1-1: new full-speed USB device number 2 using sm501-usb > sm501-usb sm501-usb: DMA map on device without dma_mask > > With that, I am giving up. Copying Christoph as he appears to be heavily > involved in the patch series causing the problems. What was the last tree you tested that works perfectly?