1 files changed, 4 insertions, 3 deletions

diff --git a/arch/um/kernel/sigio.c b/arch/um/kernel/sigio.c
index 2b0ab438301c..89f9866a1354 100644
--- a/arch/um/kernel/sigio.c
+++ b/arch/um/kernel/sigio.c
@@ -23,7 +23,7 @@ static irqreturn_t sigio_interrupt(int irq, void *data)
 
         os_read_file(sigio_irq_fd, &c, sizeof(c));
         reactivate_fd(sigio_irq_fd, SIGIO_WRITE_IRQ);
-        return(IRQ_HANDLED);
+        return IRQ_HANDLED;
 }
 
 int write_sigio_irq(int fd)
@@ -36,12 +36,13 @@ int write_sigio_irq(int fd)
         if(err){
                 printk("write_sigio_irq : um_request_irq failed, err = %d\n",
                        err);
-                return(-1);
+                return -1;
         }
         sigio_irq_fd = fd;
-        return(0);
+        return 0;
 }
 
+/* These are called from os-Linux/sigio.c to protect its pollfds arrays. */
 static DEFINE_SPINLOCK(sigio_spinlock);
 
 void sigio_lock(void)