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Commit f740e6c9 authored by Kenji Kaneshige's avatar Kenji Kaneshige Committed by Tony Luck
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[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: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: default avatarTony 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