At Fri, 1 May 2009 12:32:41 +0100, Mark Brown wrote:
On Thu, Apr 30, 2009 at 02:29:41PM -0500, Gabriel Johnson wrote:
is working. Now using the ioctl to get mmap address of the dma space isn't working, I get a kernel machine check error:
...
Should the default mmap ioctl functions work on powerpc?
I know that there were some problems with PowerPC memory access, unfortunately I don't know any specifics or if these issues are fixed in current kernels. Searching for postings by Takashi Iwai on the PowerPC kernel lists might turn something up.
The ALSA mmap support on non-coherent architecture is still buggy.
Some test patches are found in sound.git tree test/dma-fix branch. git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
The sound-unstable tree already merges this branch. Try that tree instead. git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-unstable-2.6.git
Takashi