From 03d8318e7bf6c99054966313b70ea223b6eacad3 Mon Sep 17 00:00:00 2001
From: Kenjiro Nakayama <nakayamakenjiro@gmail.com>
Date: Tue, 6 Dec 2016 19:18:59 +0900
Subject: [PATCH] poll: output error when failed to write

---
 poll.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/poll.go b/poll.go
index c49fcef..75898d5 100644
--- a/poll.go
+++ b/poll.go
@@ -21,7 +21,7 @@ func (d *Device) beginPoll() {
 		var err error
 		n, err = unix.Read(d.uioFd, buf)
 		if n == -1 && err != nil {
-			fmt.Println(err)
+			log.Errorf("error poll reading: %s", err)
 			break
 		}
 		for {
@@ -51,7 +51,7 @@ func (d *Device) recvResponse() {
 		/* Tell the fd there's something new */
 		n, err = unix.Write(d.uioFd, buf)
 		if n == -1 && err != nil {
-			log.Errorln("poll write")
+			log.Errorf("error poll writing: %s", err)
 			return
 		}
 	}