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x86: use for_each_clear_bit_from()

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Use for_each_clear_bit() to iterate over all the cleared bit in a
memory region.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2012-03-23 15:02:06 -07:00 committed by Linus Torvalds
parent 1a07cbba14
commit 0b2f4d4d76
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kernel/irqinit.c
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@ -306,10 +306,10 @@ void __init native_init_IRQ(void)
* us. (some of these will be overridden and become * us. (some of these will be overridden and become
* 'special' SMP interrupts) * 'special' SMP interrupts)
*/ */
for (i = FIRST_EXTERNAL_VECTOR; i < NR_VECTORS; i++) { i = FIRST_EXTERNAL_VECTOR;
for_each_clear_bit_from(i, used_vectors, NR_VECTORS) {
/* IA32_SYSCALL_VECTOR could be used in trap_init already. */ /* IA32_SYSCALL_VECTOR could be used in trap_init already. */
if (!test_bit(i, used_vectors)) set_intr_gate(i, interrupt[i - FIRST_EXTERNAL_VECTOR]);
set_intr_gate(i, interrupt[i-FIRST_EXTERNAL_VECTOR]);
} }
if (!acpi_ioapic && !of_ioapic) if (!acpi_ioapic && !of_ioapic)