Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\i8259.c Create Date:2022-07-28 07:40:41
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:unmask_8259A_irq

Proto:static void unmask_8259A_irq(unsigned int irq)

Type:void

Parameter:

TypeParameterName
unsigned intirq
79  mask = ~(1 << irq)
82  raw_spin_lock_irqsave( & i8259A_lock, flags)
83  This contains the irq mask for both 8259A irq controllers, &= mask
84  If irq & 8 Then Basic port I/O
86  Else Basic port I/O
88  raw_spin_unlock_irqrestore( & i8259A_lock, flags)
Caller
NameDescribe
enable_8259A_irq