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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 04:17:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 04:17:45 +0000 |
| commit | 41fb2ba1cd2e84f28cd9f5b91d670fef7d982409 (patch) | |
| tree | 3518db389445fe1c1e74d64e3598ed34c6e2c59a /arch/x86/kernel/apic/io_apic.c | |
| parent | Releasing progress-linux version 4.19.282-1progress5u1. (diff) | |
| download | linux-41fb2ba1cd2e84f28cd9f5b91d670fef7d982409.tar.xz linux-41fb2ba1cd2e84f28cd9f5b91d670fef7d982409.zip | |
Merging upstream version 4.19.289.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/kernel/apic/io_apic.c')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 677508baf..af59aa9c5 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -2449,17 +2449,21 @@ static int io_apic_get_redir_entries(int ioapic) unsigned int arch_dynirq_lower_bound(unsigned int from) { + unsigned int ret; + /* * dmar_alloc_hwirq() may be called before setup_IO_APIC(), so use * gsi_top if ioapic_dynirq_base hasn't been initialized yet. */ - if (!ioapic_initialized) - return gsi_top; + ret = ioapic_dynirq_base ? : gsi_top; + /* - * For DT enabled machines ioapic_dynirq_base is irrelevant and not - * updated. So simply return @from if ioapic_dynirq_base == 0. + * For DT enabled machines ioapic_dynirq_base is irrelevant and + * always 0. gsi_top can be 0 if there is no IO/APIC registered. + * 0 is an invalid interrupt number for dynamic allocations. Return + * @from instead. */ - return ioapic_dynirq_base ? : from; + return ret ? : from; } #ifdef CONFIG_X86_32 |