Hi Christoph, On Fri, 2018-05-11 at 09:59 +0200, Christoph Hellwig wrote: > Switch to the generic noncoherent direct mapping implementation. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > --- > arch/arc/Kconfig | 4 + > arch/arc/include/asm/Kbuild | 1 + > arch/arc/include/asm/dma-mapping.h | 21 ----- > arch/arc/mm/dma.c | 141 +++-------------------------- > 4 files changed, 19 insertions(+), 148 deletions(-) > delete mode 100644 arch/arc/include/asm/dma-mapping.h Sorry I didn't try your proposed fix earlier - was away for a couple of days. But that newer version with fixed lib/dma-noncoherent.c still doesn't work on ARC. USB ECHI controller fails like that: ------------------------->8------------------------- usb 1-1: new high-speed USB device number 2 using ehci-platform usb 1-1: can't set config #1, error -32 ------------------------->8------------------------- Again with entire series reverted USB starts to work. Let's wait for other arches previously affected to update on their status. -Alexey
