ARM: v3.13-rc1: USB regression

[Aaro Koskinen]

Hi,

On Sun, Nov 24, 2013 at 10:43:59PM +0000, Russell King - ARM Linux wrote:
> On Mon, Nov 25, 2013 at 12:22:47AM +0200, Aaro Koskinen wrote:
> > [   33.967324] ohci ohci: Coherent DMA mask 0xffffffff (pfn 0xe0000-0xe0000) covers a smaller range of system memory than the DMA zone pfn 0x0-0x100000
> > 
> > I bisected this to 4dcfa60071b3d23f0181f27d8519f12e37cefbb9 (ARM: DMA-API:
> > better handing of DMA masks for coherent allocations). Reverting that
> > commit makes the USB work again fine.

[...]

> Better would be:
> 
> #define __arch_dma_to_pfn(dev, addr)	\
> 	({ unsigned long pfn = (addr) >> PAGE_SHIFT;		\
> 	   if (is_lbus_device(dev))				\
> 		pfn += PHYS_PFN_OFFSET - 			\
> 			(OMAP1510_LB_OFFSET >> PAGE_SHIFT);	\
> 	   pfn;							\
> 	})
> 
> Can you try that in arch/arm/mach-omap1/include/mach/memory.h please?

Still doesn't work:

[   33.878790] ohci ohci: Coherent DMA mask 0xffffffff (pfn 0xfffe0000-0xe0000) covers a smaller range of system memory than the DMA zone pfn 0x0-0x100000
[   33.894019] ohci ohci: can't setup: -12

A.