[alsa-devel] [PATCH] ASoC drivers for the Freescale MPC8610 SoC
timur at freescale.com
Sun Dec 23 04:23:48 CET 2007
Lee Revell wrote:
> Please use DMA_32BIT_MASK (see include/linux/dma-mapping.h) instead of
No prob. But did you see this comment:
* NOTE: do not use the below macros in new code and do not add new
* Instead, just open-code DMA_BIT_MASK(n) within your driver
So I guess I should use DMA_BIT_MASK(32) instead.
> I've personally fixed a heisenbug in an ALSA driver
> caused by incorrectly typed DMA mask...
Can you explain to me what all of this does? Is it okay to use a static
u64 variable? Why do so many drivers do it that way? I don't even know
if 0xFFFFFFFF is the right number for my platform.
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