| From | Sasha Levin <> | Subject | [PATCH AUTOSEL for 4.4 013/101] x86: i8259: export legacy_pic symbol | Date | Thu, 8 Mar 2018 05:01:18 +0000 |
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From: Hans de Goede <hdegoede@redhat.com>
[ Upstream commit 7ee06cb2f840a96be46233181ed4557901a74385 ]
The classic PC rtc-coms driver has a workaround for broken ACPI device nodes for it which lack an irq resource. This workaround used to unconditionally hardcode the irq to 8 in these cases.
This was causing irq conflict problems on systems without a legacy-pic so a recent patch added an if (nr_legacy_irqs()) guard to the workaround to avoid this irq conflict.
nr_legacy_irqs() uses the legacy_pic symbol under the hood causing an undefined symbol error if the rtc-cmos code is build as a module.
This commit exports the legacy_pic symbol to fix this.
Cc: rtc-linux@googlegroups.com Cc: alexandre.belloni@free-electrons.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> --- arch/x86/kernel/i8259.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c index be22f5a2192e..4e3b8a587c88 100644 --- a/arch/x86/kernel/i8259.c +++ b/arch/x86/kernel/i8259.c @@ -418,6 +418,7 @@ struct legacy_pic default_legacy_pic = { }; struct legacy_pic *legacy_pic = &default_legacy_pic; +EXPORT_SYMBOL(legacy_pic); static int __init i8259A_init_ops(void) { -- 2.14.1
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