From 1a276145523c3eeab4eefd06a24155e62386d0f3 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Mon, 29 Dec 2014 09:48:25 -0600
Subject: [PATCH]  stm32: fix wait upon vertical blank.  This should never have
 occurred before.

Signed-off-by: Marco Krahl <ocram.lhark@gmail.com>
---
 arch/arm/src/stm32/stm32_ltdc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/src/stm32/stm32_ltdc.c b/arch/arm/src/stm32/stm32_ltdc.c
index b3663ba320..ed88bb9d4e 100644
--- a/arch/arm/src/stm32/stm32_ltdc.c
+++ b/arch/arm/src/stm32/stm32_ltdc.c
@@ -1102,7 +1102,7 @@ static void stm32_ltdc_reload(uint8_t value)
 
   if (value & LTDC_SRCR_WAIT)
     {
-      while ((getreg32(STM32_LTDC_SRCR) & (value & ~LTDC_SRCR_WAIT)) == value)
+      while ((getreg32(STM32_LTDC_SRCR) & (value & ~LTDC_SRCR_WAIT)) != 0)
         {
         }
     }