1 files changed, 5 insertions, 2 deletions

diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index 7a8ae0f4b387..7dcb8582ae0d 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -982,7 +982,7 @@ static struct tty_operations hp_ops = {
 static int __init
 simrs_init (void)
 {
-        int                     i;
+        int                     i, rc;
         struct serial_state     *state;
 
         if (!ia64_platform_is("hpsim"))
@@ -1017,7 +1017,10 @@ simrs_init (void)
                 if (state->type == PORT_UNKNOWN) continue;
 
                 if (!state->irq) {
-                        state->irq = assign_irq_vector(AUTO_ASSIGN);
+                        if ((rc = assign_irq_vector(AUTO_ASSIGN)) < 0)
+                                panic("%s: out of interrupt vectors!\n",
+                                      __FUNCTION__);
+                        state->irq = rc;
                         ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
                 }