x86: use for_each_clear_bit_from()
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>
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index 313fb5c..43e2b1c 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -306,10 +306,10 @@
* us. (some of these will be overridden and become
* '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. */
- 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)