diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 51a002b3f518..8c9e5e97041f 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -245,7 +245,7 @@ static void s3c64xx_flush_fifo(struct s3c64xx_spi_driver_data *sdd)
 	loops = msecs_to_loops(1);
 	do {
 		val = readl(regs + S3C64XX_SPI_STATUS);
-	} while (TX_FIFO_LVL(val, sdd) && loops--);
+	} while (TX_FIFO_LVL(val, sdd) && --loops);
 
 	if (loops == 0)
 		dev_warn(&sdd->pdev->dev, "Timed out flushing TX FIFO\n");
@@ -258,7 +258,7 @@ static void s3c64xx_flush_fifo(struct s3c64xx_spi_driver_data *sdd)
 			readl(regs + S3C64XX_SPI_RX_DATA);
 		else
 			break;
-	} while (loops--);
+	} while (--loops);
 
 	if (loops == 0)
 		dev_warn(&sdd->pdev->dev, "Timed out flushing RX FIFO\n");