ARM: meson: serial: use meson_uart_tx_empty() to wait for empty
Use the meson_uart_tx_empty() instead of a direct read of the status register. This is easier to read and will ensure the UART's transmit state machine is idle when trying to update the baud rate. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Tested-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -285,7 +285,7 @@ static void meson_uart_change_speed(struct uart_port *port, unsigned long baud)
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{
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{
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u32 val;
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u32 val;
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while (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_EMPTY))
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while (!meson_uart_tx_empty(port))
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cpu_relax();
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cpu_relax();
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val = readl(port->membase + AML_UART_REG5);
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val = readl(port->membase + AML_UART_REG5);
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