cpu/stm32f3: spi: Cast enum to unsigned int for comparison

8 years ago · e4629eb0bb
parent 19cee2d757
commit e4629eb0bb
1 changed files with 3 additions and 3 deletions
--- 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;
    }
 }