snd_dma_alloc_pages

snd_dma_alloc_pages_fallback
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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.

Return

Zero if the buffer with the given size is allocated successfully, otherwise a negative value on error.