diff options
| -rw-r--r-- | drivers/tty/serial/tegra_hsuart.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/tty/serial/tegra_hsuart.c b/drivers/tty/serial/tegra_hsuart.c index 8b65e20c4d3e..484e228dc044 100644 --- a/drivers/tty/serial/tegra_hsuart.c +++ b/drivers/tty/serial/tegra_hsuart.c @@ -1263,6 +1263,12 @@ static void tegra_set_termios(struct uart_port *u, struct ktermios *termios, if (t->rts_active) set_rts(t, false); + /* Clear all interrupts as configuration is going to be change */ + uart_writeb(t, t->ier_shadow | UART_IER_RDI, UART_IER); + uart_readb(t, UART_IER); + uart_writeb(t, 0, UART_IER); + uart_readb(t, UART_IER); + /* Parity */ lcr = t->lcr_shadow; lcr &= ~UART_LCR_PARITY; @@ -1335,6 +1341,13 @@ static void tegra_set_termios(struct uart_port *u, struct ktermios *termios, /* update the port timeout based on new settings */ uart_update_timeout(u, termios->c_cflag, baud); + /* Make sure all write has completed */ + uart_readb(t, UART_IER); + + /* Reenable interrupt */ + uart_writeb(t, t->ier_shadow, UART_IER); + uart_readb(t, UART_IER); + spin_unlock_irqrestore(&u->lock, flags); dev_vdbg(t->uport.dev, "-tegra_set_termios\n"); return; |