diff --git a/drivers/memstick/host/r592.c b/drivers/memstick/host/r592.c
index 026fadaa1d5deb8923f3e29712a7f7fcc6e06705..615a83782e55d46155c7ba4749272aa5d991a368 100644
--- a/drivers/memstick/host/r592.c
+++ b/drivers/memstick/host/r592.c
@@ -359,12 +359,15 @@ static void r592_write_fifo_pio(struct r592_device *dev,
 /* Flushes the temporary FIFO used to make aligned DWORD writes */
 static void r592_flush_fifo_write(struct r592_device *dev)
 {
+	int ret;
 	u8 buffer[4] = { 0 };
 
 	if (kfifo_is_empty(&dev->pio_fifo))
 		return;
 
-	kfifo_out(&dev->pio_fifo, buffer, 4);
+	ret = kfifo_out(&dev->pio_fifo, buffer, 4);
+	/* intentionally ignore __must_check return code */
+	(void)ret;
 	r592_write_reg_raw_be(dev, R592_FIFO_PIO, *(u32 *)buffer);
 }