From: Maciej W. Rozycki Date: Tue, 27 May 2008 20:19:28 +0000 (+0100) Subject: x86: I/O APIC: remove redundant LVT0 masking X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6b4722a7779ebadcf016fd96ce3156b6acda8a31;p=deliverable%2Flinux.git x86: I/O APIC: remove redundant LVT0 masking The LINT0 line of the local APIC is masked in the LVT0 entry in check_timer() before this function is ever called. Removed the redundant unmasking for better control. Signed-off-by: Maciej W. Rozycki Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c index 6e743ecf863b..51e5519ee1a7 100644 --- a/arch/x86/kernel/io_apic_32.c +++ b/arch/x86/kernel/io_apic_32.c @@ -1310,9 +1310,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in memset(&entry,0,sizeof(entry)); - /* mask LVT0 */ - apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT); - /* * We use logical delivery to get the timer IRQ * to the first CPU. diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c index 83d4e117746b..565f19b01bf4 100644 --- a/arch/x86/kernel/io_apic_64.c +++ b/arch/x86/kernel/io_apic_64.c @@ -906,9 +906,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in memset(&entry, 0, sizeof(entry)); - /* mask LVT0 */ - apic_write(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT); - /* * We use logical delivery to get the timer IRQ * to the first CPU.