Message ID | 20150120143254.GB17657@e103592.cambridge.arm.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index eb397c7..9ca78db 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -1291,6 +1291,7 @@ static void pl011_tx_chars(struct uart_amba_port *uap) writew(uap->port.x_char, uap->port.membase + UART01x_DR); uap->port.icount.tx++; uap->port.x_char = 0; + BUG_ON(uap->tx_avail < 1); uap->tx_avail--; return; }