[POWERPC] iSeries: fix irq.c for combined build

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index eb9fc621e057..e1936952017c 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -268,7 +268,8 @@ void do_IRQ(struct pt_regs *regs)
         set_irq_regs(old_regs);
 
 #ifdef CONFIG_PPC_ISERIES
-        if (get_lppaca()->int_dword.fields.decr_int) {
+        if (firmware_has_feature(FW_FEATURE_ISERIES) &&
+                        get_lppaca()->int_dword.fields.decr_int) {
                 get_lppaca()->int_dword.fields.decr_int = 0;
                 /* Signal a fake decrementer interrupt */
                 timer_interrupt(regs);