[lkml]   [2009]   [Jun]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: is_device_dma_capable
Hi Fujita,

2009/6/16 FUJITA Tomonori <>:
> You use X86_32, right?

I have CONFIG_X86_32=y in my config file.

> In 2.6.25, X86_32 and X86_64 had the own dma_alloc_coherent
> implementations; X86_32 accepted a device having dma_mask that is not
> initialized however X86_64 didn't, I think.
> When we merged them, we chose to prohibit a device having dma_mask
> that is not initialized. I'm not sure the DMA docs say this but IMO
> it's good to require drivers to set up dma_mask (and
> coherent_dma_mask) properly if the drivers want DMA.

If you could point me in the direction of how to set these values
correctly, I would appreciate it.


 \ /
  Last update: 2009-06-16 10:25    [W:0.040 / U:19.612 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site