From ba3c9dd8d11ba4766c5481e47883278de74ef403 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Wed, 6 Apr 2016 11:26:32 -0700
Subject: [PATCH] Insist on writing stream data in buffer-sized blocks.

Maintaining alignment improves SD card write performance significantly.
---
 firmware/application/audio_thread.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/firmware/application/audio_thread.hpp b/firmware/application/audio_thread.hpp
index 9752d018c..f87b12198 100644
--- a/firmware/application/audio_thread.hpp
+++ b/firmware/application/audio_thread.hpp
@@ -121,8 +121,8 @@ private:
 
 				const auto bytes_to_write = stream.read(write_buffer->data(), write_buffer->size());
 
-				if( bytes_to_write ) {
-					if( !file.write(write_buffer->data(), bytes_to_write) ) {
+				if( bytes_to_write == write_buffer->size() ) {
+					if( !file.write(write_buffer->data(), write_buffer->size()) ) {
 						led_tx.on();
 						break;
 					}