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[ARM] 4996/1: <IMX UART>: do not enable tx empty interrupt on startup 

We are not interested in tranceiver empty interrupts until we actually
sent a buffer.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Sascha Hauer 2008-04-17 08:44:47 +01:00 committed by Russell King
parent 0d3c3938ff
commit 789d52589a
1 changed files with 1 additions and 1 deletions
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2
drivers/serial/imx.c
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@ -536,7 +536,7 @@ static int imx_startup(struct uart_port *port)
writel(USR1_RTSD, sport->port.membase + USR1);
temp = readl(sport->port.membase + UCR1);
temp |= (UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
temp |= UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN;
writel(temp, sport->port.membase + UCR1);
temp = readl(sport->port.membase + UCR2);