[SPARC] uctrl: Check request_irq() return value.

Based upon a patch by Monakhov Dmitriy.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/sbus/char/uctrl.c b/drivers/sbus/char/uctrl.c
index 45cf5bc..44d2ef9 100644 (file)
--- a/drivers/sbus/char/uctrl.c
+++ b/drivers/sbus/char/uctrl.c
@@ -364,6 +364,7 @@ static int __init ts102_uctrl_init(void)
        struct linux_prom_irqs tmp_irq[2];
         unsigned int vaddr[2] = { 0, 0 };
        int tmpnode, uctrlnode = prom_getchild(prom_root_node);
+       int err;
 
        tmpnode = prom_searchsiblings(uctrlnode, "obio");
 
@@ -389,7 +390,12 @@ static int __init ts102_uctrl_init(void)
        if(!driver->irq) 
                driver->irq = tmp_irq[0].pri;
 
-       request_irq(driver->irq, uctrl_interrupt, 0, "uctrl", driver);
+       err = request_irq(driver->irq, uctrl_interrupt, 0, "uctrl", driver);
+       if (err) {
+               printk("%s: unable to register irq %d\n",
+                      __FUNCTION__, driver->irq);
+               return err;
+       }
 
        if (misc_register(&uctrl_dev)) {
                printk("%s: unable to get misc minor %d\n",