Commit 6376cd39 authored by Nandor Han's avatar Nandor Han Committed by Greg Kroah-Hartman

serial: imx: Enable RTSD only when needed

Currently, this IRQ is always enabled. Some devices might mux these pins
to other I/Os, like I2C. This could lead to spurious interrupts.

This commit makes this IRQ optional, by using the field have_rtscts.
Signed-off-by: default avatarNandor Han <nandor.han@ge.com>
Signed-off-by: default avatarRomain Perier <romain.perier@collabora.com>
Reviewed-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5ac88295
......@@ -1299,7 +1299,9 @@ static int imx_startup(struct uart_port *port)
imx_enable_dma(sport);
temp = readl(sport->port.membase + UCR1);
temp |= UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN;
temp |= UCR1_RRDYEN | UCR1_UARTEN;
if (sport->have_rtscts)
temp |= UCR1_RTSDEN;
writel(temp, sport->port.membase + UCR1);
......
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