Merged revisions 154685 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r154685 | murf | 2008-11-05 09:06:53 -0700 (Wed, 05 Nov 2008) | 1 line

This fix was prompted by communication from user, who was seeing thousands of error logs... looks like EAGAIN. Made such uninteresting.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@154687 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/channel.c

@@ -2442,7 +2442,8 @@ static struct ast_frame *__ast_read(struct ast_channel *chan, int dropaudio)
 			}
 		}
 		if (read(chan->alertpipe[0], &blah, sizeof(blah)) < 0) {
-			ast_log(LOG_WARNING, "read() failed: %s\n", strerror(errno));
+			if (errno != EINTR && errno != EAGAIN)
+				ast_log(LOG_WARNING, "read() failed: %s\n", strerror(errno));
 		}
 	}