Commit 6f026d6b authored by Jiada Wang's avatar Jiada Wang Committed by Greg Kroah-Hartman

serial: imx: Enable UCR4_OREN in startup interface

Other than enable Receiver Overrun Interrupt Enable (UCR4_OREN)
in start_tx interface, UCR4_OREN should be enabled before enable
of Receiver.
Signed-off-by: default avatarJiada Wang <jiada_wang@mentor.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ee5e7c10
......@@ -611,13 +611,6 @@ static void imx_start_tx(struct uart_port *port)
temp &= ~(UCR1_RRDYEN);
writel(temp, sport->port.membase + UCR1);
}
/* Clear any pending ORE flag before enabling interrupt */
temp = readl(sport->port.membase + USR2);
writel(temp | USR2_ORE, sport->port.membase + USR2);
temp = readl(sport->port.membase + UCR4);
temp |= UCR4_OREN;
writel(temp, sport->port.membase + UCR4);
if (!sport->dma_is_enabled) {
temp = readl(sport->port.membase + UCR1);
......@@ -1178,6 +1171,14 @@ static int imx_startup(struct uart_port *port)
writel(temp, sport->port.membase + UCR1);
/* Clear any pending ORE flag before enabling interrupt */
temp = readl(sport->port.membase + USR2);
writel(temp | USR2_ORE, sport->port.membase + USR2);
temp = readl(sport->port.membase + UCR4);
temp |= UCR4_OREN;
writel(temp, sport->port.membase + UCR4);
temp = readl(sport->port.membase + UCR2);
temp |= (UCR2_RXEN | UCR2_TXEN);
if (!sport->have_rtscts)
......
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