Commit f45bcd70 authored Feb 23, 2007 by Eric W. Biederman Committed by Linus Torvalds Feb 26, 2007

[PATCH] x86_64 irq: In __DO_ACTION perform the FINAL action for every entry.



If we have an irq that comes from multiple io_apic pins the FINAL action
(which is io_apic_sync or nothing) needs to be called for every entry or
else if the two pins come from different io_apics we may not wait until
after the action happens on the io_apic.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 5ff5115e

arch/x86_64/kernel/io_apic.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -149,11 +149,11 @@ static inline void io_apic_sync(unsigned int apic)
	reg = io_apic_read(entry->apic, 0x10 + R + pin*2); \		reg = io_apic_read(entry->apic, 0x10 + R + pin*2); \
	reg ACTION; \		reg ACTION; \
	io_apic_modify(entry->apic, reg); \		io_apic_modify(entry->apic, reg); \
			FINAL; \
	if (!entry->next) \		if (!entry->next) \
	break; \		break; \
	entry = irq_2_pin + entry->next; \		entry = irq_2_pin + entry->next; \
	} \		} \
	FINAL; \
	}		}

	union entry_union {		union entry_union {