From 66378cc2d53d4fba540a9c44ce12581ba25cfa9a Mon Sep 17 00:00:00 2001
From: Roel Verdult <roel@libnfc.org>
Date: Fri, 24 Jul 2009 14:02:39 +0000
Subject: [PATCH] Typecast to be specific what is needed

---
 src/dev_acr122.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/dev_acr122.c b/src/dev_acr122.c
index a8378af..5107645 100644
--- a/src/dev_acr122.c
+++ b/src/dev_acr122.c
@@ -227,7 +227,7 @@ bool dev_acr122_transceive(const dev_spec ds, const byte_t* pbtTx, const uint32_
   // Make sure we have an emulated answer that fits the return buffer
   if (ulRxBufLen < 4 || (ulRxBufLen-4) > *puiRxLen) return false;
   // Wipe out the 4 APDU emulation bytes: D5 4B .. .. .. 90 00
-  *puiRxLen = ulRxBufLen-4;
+  *puiRxLen = ((uint32_t)ulRxBufLen)-4;
   memcpy(pbtRx,abtRxBuf+2,*puiRxLen);
 
   // Transmission went successful