函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\i8259.c Create Date:2022-07-27 08:40:26
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:probe_8259A

函数原型:static int probe_8259A(void)

返回类型:int

参数:

304  probe_val等于1左移8259A PIC related value 位的值的反
313  raw_spin_lock_irqsave( & i8259A_lock, flags)
315  Basic port I/O
316  Basic port I/O
317  new_val等于从端口输入字节
318  如果new_val不等于probe_val
319  printk(formational "Using NULL legacy PIC\n")
320  legacy_pic = & null_legacy_pic
323  raw_spin_unlock_irqrestore( & i8259A_lock, flags)
324  返回:nr_legacy_irqs()