From ff87cf62b15037fb469b9e1f564692ef02f0aad6 Mon Sep 17 00:00:00 2001
From: Philippe Teuwen <yobibe@gmail.com>
Date: Fri, 18 May 2012 21:54:55 +0000
Subject: [PATCH] Fix segfault in pn53x_initiator_transceive_bytes when pszRx
 in NULL

Cause was "return *pszRx"
Segfault occured when listing a typeB'
---
 libnfc/chips/pn53x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libnfc/chips/pn53x.c b/libnfc/chips/pn53x.c
index 9a78249..dbf800e 100644
--- a/libnfc/chips/pn53x.c
+++ b/libnfc/chips/pn53x.c
@@ -1332,7 +1332,7 @@ pn53x_initiator_transceive_bytes (struct nfc_device *pnd, const uint8_t *pbtTx,
     memcpy (pbtRx, abtRx + 1, *pszRx);
   }
   // Everything went successful, we return received bytes count
-  return *pszRx;
+  return (szRx - 1);
 }
 
 static void __pn53x_init_timer(struct nfc_device *pnd, const uint32_t max_cycles)