diff --git a/arch/arm/src/sam34/sam_lowputc.c b/arch/arm/src/sam34/sam_lowputc.c
index 9c7636c416d..dbacb110ddd 100644
--- a/arch/arm/src/sam34/sam_lowputc.c
+++ b/arch/arm/src/sam34/sam_lowputc.c
@@ -299,8 +299,6 @@ void up_lowputc(char ch)
           /* Send the character */
 
           putreg32((uint32_t)ch, SAM_CONSOLE_BASE + SAM_UART_THR_OFFSET);
-          irqrestore(flags);
-          return;
         }
 
       irqrestore(flags);
diff --git a/arch/arm/src/sam34/sam_serial.c b/arch/arm/src/sam34/sam_serial.c
index e2f2dfa57c9..b2f98a5828f 100644
--- a/arch/arm/src/sam34/sam_serial.c
+++ b/arch/arm/src/sam34/sam_serial.c
@@ -652,7 +652,7 @@ static inline void up_restoreusartint(struct up_dev_s *priv, uint32_t imr)
 {
   /* Restore the previous interrupt state */
 
-  up_serialout(priv, SAM_UART_IMR_OFFSET, imr);
+  up_serialout(priv, SAM_UART_IER_OFFSET, imr);
 }
 
 /****************************************************************************
diff --git a/arch/arm/src/samv7/sam_lowputc.c b/arch/arm/src/samv7/sam_lowputc.c
index b78a5f919f9..0c9b74baa22 100644
--- a/arch/arm/src/samv7/sam_lowputc.c
+++ b/arch/arm/src/samv7/sam_lowputc.c
@@ -226,8 +226,6 @@ void up_lowputc(char ch)
           /* Send the character */
 
           putreg32((uint32_t)ch, SAM_CONSOLE_BASE + SAM_UART_THR_OFFSET);
-          irqrestore(flags);
-          return;
         }
 
       irqrestore(flags);
diff --git a/arch/arm/src/samv7/sam_serial.c b/arch/arm/src/samv7/sam_serial.c
index 9618ee188a5..896fcd4059e 100644
--- a/arch/arm/src/samv7/sam_serial.c
+++ b/arch/arm/src/samv7/sam_serial.c
@@ -712,7 +712,7 @@ static inline void sam_restoreusartint(struct sam_dev_s *priv, uint32_t imr)
 {
   /* Restore the previous interrupt state */
 
-  sam_serialout(priv, SAM_UART_IMR_OFFSET, imr);
+  sam_serialout(priv, SAM_UART_IER_OFFSET, imr);
 }
 
 /****************************************************************************