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| author | Michael Bestas <mkbestas@lineageos.org> | 2021-04-19 18:56:01 +0300 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2021-04-19 18:56:01 +0300 |
| commit | f3d4e7ef44f14e433312bc0646ea996d8c8756bf (patch) | |
| tree | 78f6dc67808364d9ad3eae5e4c323a668bb6fadc /arch/x86/kernel | |
| parent | db1bf2b55b337174e62637e6c23b45f166bdc14e (diff) | |
| parent | f5978a07daf67b25d101caa42ab3b18f0edf3dde (diff) | |
Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-18.1-caf-msm8998
This brings LA.UM.9.2.r1-02700-SDMxx0.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
f5978a07daf67 Merge 4.4.267 into android-4.4-p
Conflicts:
arch/alpha/include/asm/Kbuild
drivers/mmc/core/mmc.c
drivers/usb/gadget/configfs.c
Change-Id: I978d923e97c18f284edbd32c0c19ac70002f7d83
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 5e8fc9809da3..497ad354e123 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1040,6 +1040,16 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, if (idx >= 0 && test_bit(mp_irqs[idx].srcbus, mp_bus_not_pci)) { irq = mp_irqs[idx].srcbusirq; legacy = mp_is_legacy_irq(irq); + /* + * IRQ2 is unusable for historical reasons on systems which + * have a legacy PIC. See the comment vs. IRQ2 further down. + * + * If this gets removed at some point then the related code + * in lapic_assign_system_vectors() needs to be adjusted as + * well. + */ + if (legacy && irq == PIC_CASCADE_IR) + return -EINVAL; } mutex_lock(&ioapic_mutex); |