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DMA_RELEASE_FROM_COH(9) Device drivers infrastructure DMA_RELEASE_FROM_COH(9)

NAME

dma_release_from_coherent - try to free the memory allocated from per-device coherent memory pool

SYNOPSIS

int dma_release_from_coherent(struct device * dev, int order, void * vaddr);

ARGUMENTS

dev

device from which the memory was allocated

order

the order of pages allocated

vaddr

virtual address of allocated pages

DESCRIPTION

This checks whether the memory was allocated from the per-device coherent memory pool and if so, releases that memory.

Returns 1 if we correctly released the memory, or 0 if dma_release_coherent should proceed with releasing memory from generic pools.

COPYRIGHT

June 2024 Kernel Hackers Manual 3.10