函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\dma\direct.c Create Date:2022-07-27 11:33:08
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：dma_direct_can_mmap

函数原型：bool dma_direct_can_mmap(struct device *dev)

返回类型：bool

参数：

类型参数名称
struct device *dev
438  返回:dev_is_dma_coherent(dev)或IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_DMA_NONCOHERENT_MMAP)
调用者
名称描述
dma_can_mmapdma_can_mmap - check if a given device supports dma_mmap_**@dev: device to check* Returns %true if @dev supports dma_mmap_coherent() and dma_mmap_attrs() to* map DMA allocations to userspace.