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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-04 12:18:01 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-04 12:18:01 -0800 |
| commit | a572a1b999489efb591287632279c6c9eca3e4ed (patch) | |
| tree | 9bcb859aec2cfce13a896c46f4b41d4abd881830 /arch/x86/kernel/apic/io_apic.c | |
| parent | 24bc5fe716855e5e608c515340b3ceacfb143bcc (diff) | |
| parent | aaaec6fc755447a1d056765b11b24d8ff2b81366 (diff) | |
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
- Prevent double activation of interrupt lines, which causes problems
on certain interrupt controllers
- Handle the fallout of the above because x86 (ab)uses the activation
function to reconfigure interrupts under the hood.
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/irq: Make irq activate operations symmetric
irqdomain: Avoid activating interrupts more than once
Diffstat (limited to 'arch/x86/kernel/apic/io_apic.c')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 1e35dd06b090..52f352b063fd 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -2117,6 +2117,7 @@ static inline void __init check_timer(void) if (idx != -1 && irq_trigger(idx)) unmask_ioapic_irq(irq_get_chip_data(0)); } + irq_domain_deactivate_irq(irq_data); irq_domain_activate_irq(irq_data); if (timer_irq_works()) { if (disable_timer_pin_1 > 0) @@ -2138,6 +2139,7 @@ static inline void __init check_timer(void) * legacy devices should be connected to IO APIC #0 */ replace_pin_at_irq_node(data, node, apic1, pin1, apic2, pin2); + irq_domain_deactivate_irq(irq_data); irq_domain_activate_irq(irq_data); legacy_pic->unmask(0); if (timer_irq_works()) { |