[alsa-devel] clarification on mmap

Harsha, Priya priya.harsha at intel.com
Mon Feb 23 14:29:11 CET 2009


I have a question on mmap. If I give my .info to be _MMAP and _MMAP_VALID. Will ALSA framework internally take care of mmap-ing the kernel buffer that has been pre-allocated in the .probe call? Do I need to do anything special to mmap a kernel buffer into user space? Just accessing the runtime->dma_area would allow me to access user data right?


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