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SERIAL: omap: allow hardware assisted rts/cts modes to be disabled 

There is nothing which clears the auto RTS/CTS bits, so once hardware
flow control gets enabled, there's no possibility to disable it.
So, clear these bits when CRTSCTS is cleared.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Russell King 2012-10-05 23:48:28 +01:00
parent 9aba8d5b01
commit 0d5b166395
1 changed files with 7 additions and 0 deletions
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7
drivers/tty/serial/omap-serial.c
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@ -921,6 +921,13 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
serial_out(up, UART_MCR, up->mcr | UART_MCR_RTS);
serial_out(up, UART_LCR, cval);
} else {
/* Disable AUTORTS and AUTOCTS */
up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
serial_out(up, UART_EFR, up->efr);
serial_out(up, UART_LCR, cval);
}
serial_omap_set_mctrl(&up->port, up->port.mctrl);