1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c
index 8f83e4007ecd..0ca83ac31d07 100644
--- a/drivers/serial/mpsc.c
+++ b/drivers/serial/mpsc.c
@@ -769,12 +769,12 @@ mpsc_rx_intr(struct mpsc_port_info *pi, struct pt_regs *regs)
                 bytes_in = be16_to_cpu(rxre->bytecnt);
 
                 /* Following use of tty struct directly is deprecated */
-                if (unlikely((tty->flip.count + bytes_in) >= TTY_FLIPBUF_SIZE)){
+                if (unlikely(tty_buffer_request_room(tty, bytes_in) < bytes_in)) {
                         if (tty->low_latency)
                                 tty_flip_buffer_push(tty);
                         /*
-                         * If this failed then we will throw awa the bytes
-                         * but mst do so to clear interrupts.
+                         * If this failed then we will throw away the bytes
+                         * but must do so to clear interrupts.
                          */
                 }