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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-14 09:14:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-14 09:14:43 +0200 |
| commit | 99289bf1a76c0aea6ac0f77335b8c9bdca16aac7 (patch) | |
| tree | 69b9484abfd6014154b925fdc0733438ffdf923f /arch/x86/kernel/apic/vector.c | |
| parent | a69008475fc565cec5a760f1997f326773c84aac (diff) | |
| parent | 009c9aa5be652675a06d5211e1640e02bbb1c33d (diff) | |
Merge tag 'v5.13-rc6' into tty-next
We want the tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/kernel/apic/vector.c')
| -rw-r--r-- | arch/x86/kernel/apic/vector.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 6dbdc7c22bb75..fb67ed5e7e6a8 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -738,6 +738,26 @@ void lapic_assign_legacy_vector(unsigned int irq, bool replace) irq_matrix_assign_system(vector_matrix, ISA_IRQ_VECTOR(irq), replace); } +void __init lapic_update_legacy_vectors(void) +{ + unsigned int i; + + if (IS_ENABLED(CONFIG_X86_IO_APIC) && nr_ioapics > 0) + return; + + /* + * If the IO/APIC is disabled via config, kernel command line or + * lack of enumeration then all legacy interrupts are routed + * through the PIC. Make sure that they are marked as legacy + * vectors. PIC_CASCADE_IRQ has already been marked in + * lapic_assign_system_vectors(). + */ + for (i = 0; i < nr_legacy_irqs(); i++) { + if (i != PIC_CASCADE_IR) + lapic_assign_legacy_vector(i, true); + } +} + void __init lapic_assign_system_vectors(void) { unsigned int i, vector = 0; |