http://crbug.com/433899

From 8f361d83cfcb39887f5fc591633e68d9448e3425 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Wed, 1 Oct 2014 15:43:57 +0200
Subject: [PATCH [alsa-utils]] Revert "aplay: fix pcm_read() return value"

This reverts commit 8aa13eec80eac312e4b99423909387660fb99b8f.

The semantics for pcm_read() and pcm_readv() was changed, but the
callers expect the exact frame count as requested. It's possible
to fix callers, but the fix is more complicated than to revert the
change. Note that '-d' processing was broken in some cases.

Note: The reverted commit allows that the return value might be
greater than requested (see the first condition in read routines).
---
 aplay/aplay.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/aplay/aplay.c b/aplay/aplay.c
index 30d3f31..e58e1bc 100644
--- a/aplay/aplay.c
+++ b/aplay/aplay.c
@@ -2039,7 +2039,7 @@ static ssize_t pcm_read(u_char *data, size_t rcount)
 			data += r * bits_per_frame / 8;
 		}
 	}
-	return result;
+	return rcount;
 }
 
 static ssize_t pcm_readv(u_char **data, unsigned int channels, size_t rcount)
@@ -2084,7 +2084,7 @@ static ssize_t pcm_readv(u_char **data, unsigned int channels, size_t rcount)
 			count -= r;
 		}
 	}
-	return result;
+	return rcount;
 }
 
 /*
-- 
2.1.3