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authorRussell King <rmk+kernel@arm.linux.org.uk>2012-10-05 15:13:56 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-11-04 11:26:00 +0000
commit511e74f3305e9fce1410f2205084fd67c50f81bc (patch)
treeed5d55a825ffc2006cd6824021b8c5c4f388ffa2 /drivers/tty/serial/omap-serial.c
parentd864c03bfce2449703c7f0544dac3fbaed347239 (diff)
SERIAL: omap: no need to re-read EFR
There's no need to re-read EFR after we've recently written it; the register is a configuration register which doesn't change its value without us writing to it. The last value which was written to this register was up->efr. Removing this re-reading avoids the possibility that we end up with up->efr having unintended bits set, which should only be temporarily set when accessing the enhanced features. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/tty/serial/omap-serial.c')
-rw-r--r--drivers/tty/serial/omap-serial.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 71f968b5504..6ef4cc49d81 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -873,8 +873,6 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
serial_out(up, UART_OMAP_MDR1, up->mdr1);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
-
- up->efr = serial_in(up, UART_EFR);
serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
serial_out(up, UART_LCR, 0);