Commit f740e6c9 authored Aug 22, 2007 by Kenji Kaneshige Committed by Tony Luck Aug 28, 2007

[IA64] Clear pending interrupts at CPU boot up time



The pending interrupts can be remaining at boot up time on some
platform. This will cause spurious interrupts when interrupt is
enabled for the first time. This patch clears IVR at the CPU
initialization to eliminate such spurious interrupts.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

parent 17764d24

arch/ia64/kernel/setup.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -960,6 +960,11 @@ cpu_init (void)

		/* clear TPR & XTP to enable all interrupt classes: */
		ia64_setreg(_IA64_REG_CR_TPR, 0);

		/* Clear any pending interrupts left by SAL/EFI */
		while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR)
		ia64_eoi();

		#ifdef CONFIG_SMP
		normal_xtp();
		#endif

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