From e4629eb0bb2ae27daf0cca811d719fe13ab9ab7f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joakim=20Nohlg=C3=A5rd?= <joakim.nohlgard@eistec.se>
Date: Tue, 26 Jan 2016 19:56:40 +0100
Subject: [PATCH] cpu/stm32f3: spi: Cast enum to unsigned int for comparison

---
 cpu/stm32f3/periph/spi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/cpu/stm32f3/periph/spi.c b/cpu/stm32f3/periph/spi.c
index 6a0bb22472..e8c045e16d 100644
--- a/cpu/stm32f3/periph/spi.c
+++ b/cpu/stm32f3/periph/spi.c
@@ -290,7 +290,7 @@ int spi_conf_pins(spi_t dev)
 
 int spi_acquire(spi_t dev)
 {
-    if (dev >= SPI_NUMOF) {
+    if ((unsigned int)dev >= SPI_NUMOF) {
         return -1;
     }
     mutex_lock(&locks[dev]);
@@ -299,7 +299,7 @@ int spi_acquire(spi_t dev)
 
 int spi_release(spi_t dev)
 {
-    if (dev >= SPI_NUMOF) {
+    if ((unsigned int)dev >= SPI_NUMOF) {
         return -1;
     }
     mutex_unlock(&locks[dev]);
@@ -335,7 +335,7 @@ int spi_transfer_byte(spi_t dev, char out, char *in)
 
 void spi_transmission_begin(spi_t dev, char reset_val)
 {
-    if (dev < SPI_NUMOF) {
+    if ((unsigned int)dev < SPI_NUMOF) {
         spi[dev]->DR = reset_val;
     }
 }