From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: Tue, 28 Jan 2014 17:14:46 +0000 (-0800)
Subject: android/hal-audio: Set stream fd to blocking
X-Git-Tag: android-x86-4.4-r3~5621
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=55c3cacc1ea42e76c54e7215fc34b90a94fa7f5c;p=android-x86%2Fexternal-bluetooth-bluez.git

android/hal-audio: Set stream fd to blocking

This makes the stream to block on io operation so it does not return
EAGAIN on syscall such as write.
---

diff --git a/android/hal-audio.c b/android/hal-audio.c
index 2ca628948..b1323b0b4 100644
--- a/android/hal-audio.c
+++ b/android/hal-audio.c
@@ -25,6 +25,7 @@
 #include <sys/un.h>
 #include <unistd.h>
 #include <arpa/inet.h>
+#include <fcntl.h>
 
 #include <hardware/audio.h>
 #include <hardware/hardware.h>
@@ -1108,6 +1109,24 @@ static int in_remove_audio_effect(const struct audio_stream *stream,
 	return -ENOSYS;
 }
 
+static int set_blocking(int fd)
+{
+	int flags;
+
+	flags = fcntl(fd, F_GETFL, 0);
+	if (flags < 0) {
+		error("fcntl(F_GETFL): %s (%d)", strerror(errno), errno);
+		return -errno;
+	}
+
+	if (fcntl(fd, F_SETFL, flags & ~O_NONBLOCK) < 0) {
+		error("fcntl(F_SETFL): %s (%d)", strerror(errno), errno);
+		return -errno;
+	}
+
+	return 0;
+}
+
 static int audio_open_output_stream(struct audio_hw_device *dev,
 					audio_io_handle_t handle,
 					audio_devices_t devices,
@@ -1156,8 +1175,10 @@ static int audio_open_output_stream(struct audio_hw_device *dev,
 	if (!preset || fd < 0)
 		goto fail;
 
-	out->ep->fd = fd;
+	if (set_blocking(fd) < 0)
+		goto fail;
 
+	out->ep->fd = fd;
 	codec = out->ep->codec;
 
 	codec->init(preset, mtu, &out->ep->codec_data);