函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\irq\manage.c Create Date:2022-07-27 11:09:59
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：_irq - free an interrupt allocated with request_irq*@irq: Interrupt line to free*@dev_id: Device identity to free* Remove an interrupt handler

函数原型：const void *free_irq(unsigned int irq, void *dev_id)

返回类型：void

参数：

类型参数名称
unsigned intirq
void *dev_id
1842  desc等于中断转换为描述
1846  如果非desc或WARN_ON(irq_settings_is_per_cpu_devid(desc))则返回:NULL
1854  action等于Internal function to unregister an irqaction - used to free* regular and special interrupts that are part of the architecture.
1856  如果非action则返回:NULL
1859  devname等于设备名
1860  释放内存
1861  返回:devname
调用者
名称描述
devm_irq_release
devm_free_irqdevm_free_irq - free an interrupt*@dev: device to free interrupt for*@irq: Interrupt line to free*@dev_id: Device identity to free* Except for the extra @dev argument, this function takes the* same arguments and performs the same function as free_irq()
free_vm86_irq