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 11:32:51
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：report_addr

函数原型：static void report_addr(struct device *dev, dma_addr_t dma_addr, size_t size)

返回类型：void

参数：

类型参数名称
struct device *dev
dma_addr_tdma_addr
size_tsize
28  如果非 dma mask (if dma'able device) 则
29  dev_err_once(dev, "DMA map on device without dma_mask\n")
30  否则如果 dma mask (if dma'able device) 大于等于DMA_BIT_MASK(32)或 upstream dma constraint 则
31  dev_err_once(dev, "overflow %pad+%zu of DMA mask %llx bus limit %llx\n", & dma_addr, size, * dma mask (if dma'able device) , upstream dma constraint )
35  WARN_ON_ONCE(1)
调用者
名称描述
dma_direct_map_page
dma_direct_map_resource