The ALSA Driver API
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snd_dma_alloc_pages_fallback

Name

snd_dma_alloc_pages_fallback --  allocate the buffer area according to the given type with fallback

Synopsis

int snd_dma_alloc_pages_fallback (int type, struct device * device, size_t size, struct snd_dma_buffer * dmab);

Arguments

type

the DMA buffer type

device

the device pointer

size

the buffer size to allocate

dmab

buffer allocation record to store the allocated data

Description

Calls the memory-allocator function for the corresponding buffer type. When no space is left, this function reduces the size and tries to allocate again. The size actually allocated is stored in res_size argument.

Returns zero if the buffer with the given size is allocated successfuly, other a negative value at error.

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