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tty: omap-serial: Fix initial on-boot RTS GPIO level
The rs485 flag "SER_RS485_RTS_AFTER_SEND" was wrongly read from the GPIO flags. This caused the RTS pin to be high during boot. Signed-off-by: Rafael Gago Castano <rgc@hms.se> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 3 additions and 4 deletions
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@ -1602,7 +1602,6 @@ static int serial_omap_probe_rs485(struct uart_omap_port *up,
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struct device_node *np)
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{
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struct serial_rs485 *rs485conf = &up->port.rs485;
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enum of_gpio_flags flags;
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int ret;
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rs485conf->flags = 0;
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@ -1622,13 +1621,13 @@ static int serial_omap_probe_rs485(struct uart_omap_port *up,
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}
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/* check for tx enable gpio */
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up->rts_gpio = of_get_named_gpio_flags(np, "rts-gpio", 0, &flags);
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up->rts_gpio = of_get_named_gpio(np, "rts-gpio", 0);
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if (gpio_is_valid(up->rts_gpio)) {
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ret = devm_gpio_request(up->dev, up->rts_gpio, "omap-serial");
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if (ret < 0)
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return ret;
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ret = gpio_direction_output(up->rts_gpio,
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flags & SER_RS485_RTS_AFTER_SEND);
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ret = rs485conf->flags & SER_RS485_RTS_AFTER_SEND ? 1 : 0;
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ret = gpio_direction_output(up->rts_gpio, ret);
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if (ret < 0)
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return ret;
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} else if (up->rts_gpio == -EPROBE_DEFER) {
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