diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2017-04-08 19:54:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 10:57:31 +0100 |
| commit | 50655ac3bc2f9ec73d828896c70f6be2229d4f29 (patch) | |
| tree | ff6a5fb3adb42abce998e032bd65b139e7799dc0 | |
| parent | 911e850bc967ff7c00524f4d8f068ce8a7a12695 (diff) | |
x86: i8259: export legacy_pic symbol
[ 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/i8259.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c index e7cc5370cd2f..6c7e7986939a 100644 --- a/arch/x86/kernel/i8259.c +++ b/arch/x86/kernel/i8259.c @@ -405,6 +405,7 @@ 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) { |