[PATCH]io_apic.c: fix compile warning

[Figo.zhang]

fix compile warning:
arch/x86/kernel/apic/io_apic.c: In function âioapic_write_entryâ:
arch/x86/kernel/apic/io_apic.c:466: warning: âeuâ is used uninitialized in this function
arch/x86/kernel/apic/io_apic.c:465: note: âeuâ was declared here

Signed-off-by: Figo.zhang <figo1802@xxxxxxxxx>
--- 

 arch/x86/kernel/apic/io_apic.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index ef8d929..e9ca066 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -462,7 +462,7 @@ static struct IO_APIC_route_entry ioapic_read_entry(int apic, int pin)
 static void
 __ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e)
 {
-	union entry_union eu;
+	union entry_union eu = {{0,0}};
 	eu.entry = e;
 	io_apic_write(apic, 0x11 + 2*pin, eu.w2);
 	io_apic_write(apic, 0x10 + 2*pin, eu.w1);


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