Check if irq is sharable

Need to check if irq is sharable amoung handlers when searching sharable IOSAPIC irq.

---
 arch/ia64/kernel/iosapic.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

Index: linux-2.6.21-rc5/arch/ia64/kernel/iosapic.c
=================================--- linux-2.6.21-rc5.orig/arch/ia64/kernel/iosapic.c 2007-04-05 22:18:12.000000000 +0900
+++ linux-2.6.21-rc5/arch/ia64/kernel/iosapic.c 2007-04-05 22:18:14.000000000 +0900
@@ -503,8 +503,9 @@
for (i = 0; i <= NR_IRQS; i++) {
info = &iosapic_intr_info[i];
if (info->trigger = trigger && info->polarity = pol &&
- (info->dmode = IOSAPIC_FIXED || info->dmode =
- IOSAPIC_LOWEST_PRIORITY)) {
+ (info->dmode = IOSAPIC_FIXED ||
+ info->dmode = IOSAPIC_LOWEST_PRIORITY) &&
+ can_request_irq(i, IRQF_SHARED)) {
if (min_count = -1 || info->count < min_count) {
irq = i;
min_count = info->count;