From d162b1026fbb95426f185dff557ab5e77194b1b3 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Tue, 30 Nov 1999 09:26:00 +0000
Subject: [PATCH] PCM loopback API improved and added back the functionality.
 Some mmap() changes for the OSS emulation.

---
 aplay/aplay.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/aplay/aplay.c b/aplay/aplay.c
index 605c6e7..971657f 100644
--- a/aplay/aplay.c
+++ b/aplay/aplay.c
@@ -34,6 +34,7 @@
 #include <getopt.h>
 #include <fcntl.h>
 #include <ctype.h>
+#include <errno.h>
 #include <netinet/in.h>
 #include <sys/asoundlib.h>
 #include "aconfig.h"
@@ -1224,6 +1225,10 @@ void playback_go(int fd, int loaded, u_long count, int rtype, char *name)
 				char *buf = audiobuf;
 				while (l > 0) {
 					while ((r = fcn_write(pcm_handle, buf, l)) < 0) {
+						if (r == -EAGAIN) {
+							r = 0;
+							break;
+						}
 						playback_write_error();
 					}
 #if 0
@@ -1311,6 +1316,8 @@ void capture_go(int fd, int loaded, u_long count, int rtype, char *name)
 				}
 				count -= c;
 			}
+			if (l == -EAGAIN)
+				l = 0;
 			if (l < 0) {
 				fprintf(stderr, "read error: %s\n", snd_strerror(l));
 				exit(-1);