serial: qcom-geni: drop flip buffer WARN()

Drop the unnecessary WARN() in case the TTY buffers are ever full in
favour of a rate limited dev_err() which doesn't kill the machine when
panic_on_warn is set.

Reviewed-by: Douglas Anderson <[email protected]>
Signed-off-by: Johan Hovold <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: jhovold

drivers/tty/serial/qcom_geni_serial.c

@@ -588,9 +588,8 @@ static void handle_rx_uart(struct uart_port *uport, u32 bytes, bool drop)
 
 	ret = tty_insert_flip_string(tport, port->rx_buf, bytes);
 	if (ret != bytes) {
-		dev_err(uport->dev, "%s:Unable to push data ret %d_bytes %d\n",
-				__func__, ret, bytes);
-		WARN_ON_ONCE(1);
+		dev_err_ratelimited(uport->dev, "failed to push data (%d < %u)\n",
+				ret, bytes);
 	}
 	uport->icount.rx += ret;
 	tty_flip_buffer_push(tport);