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| author | Ben Dooks <ben.dooks@codethink.co.uk> | 2015-11-18 15:41:16 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-14 04:59:48 +0100 |
| commit | f1f5c1400f7907a1b52be94cabe8992b480785cf (patch) | |
| tree | dee699e1aa353ee661731d6c2221a34b0cc98f0e /drivers/tty | |
| parent | ARM: meson: serial: only disable tx irq on stop (diff) | |
| download | linux-f1f5c1400f7907a1b52be94cabe8992b480785cf.tar.xz linux-f1f5c1400f7907a1b52be94cabe8992b480785cf.zip | |
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>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/meson_uart.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c index 9327efd88918..d3f2c967906c 100644 --- a/drivers/tty/serial/meson_uart.c +++ b/drivers/tty/serial/meson_uart.c @@ -285,7 +285,7 @@ static void meson_uart_change_speed(struct uart_port *port, unsigned long baud) { u32 val; - while (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_EMPTY)) + while (!meson_uart_tx_empty(port)) cpu_relax(); val = readl(port->membase + AML_UART_REG5); |