From 52803ee23b3bf2fd4d89dae05429120ef5ba479a Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Mon, 22 Jun 2015 07:48:29 -0600
Subject: [PATCH] Back out another error introduced with commit
 02c33f66c5a8be774034cd40e4125e9323c7b4d8. Causes an infinite loop in
 up_lowputc().

---
 arch/arm/src/samv7/sam_lowputc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/src/samv7/sam_lowputc.c b/arch/arm/src/samv7/sam_lowputc.c
index 0774720f68..b4b2d44a91 100644
--- a/arch/arm/src/samv7/sam_lowputc.c
+++ b/arch/arm/src/samv7/sam_lowputc.c
@@ -226,6 +226,8 @@ void up_lowputc(char ch)
           /* Send the character */
 
           putreg32((uint32_t)ch, SAM_CONSOLE_BASE + SAM_UART_THR_OFFSET);
+          irqrestore(flags);
+          return;
         }
 
       irqrestore(flags);