1DMA_RELEASE_FROM_COH(9)  Device drivers infrastructure DMA_RELEASE_FROM_COH(9)
2
3
4

NAME

6       dma_release_from_coherent - try to free the memory allocated from
7       per-device coherent memory pool
8

SYNOPSIS

10       int dma_release_from_coherent(struct device * dev, int order,
11                                     void * vaddr);
12

ARGUMENTS

14       dev
15           device from which the memory was allocated
16
17       order
18           the order of pages allocated
19
20       vaddr
21           virtual address of allocated pages
22

DESCRIPTION

24       This checks whether the memory was allocated from the per-device
25       coherent memory pool and if so, releases that memory.
26
27       Returns 1 if we correctly released the memory, or 0 if
28       dma_release_coherent should proceed with releasing memory from generic
29       pools.
30

32Kernel Hackers Manual 3.10         June 2019           DMA_RELEASE_FROM_COH(9)
Impressum