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serial: meson: hide an unused function

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The newly added meson_uart_enable_tx_engine function is only called
from the console setup, not the runtime uart, which has an open-coded
version of the same register access. This produces a harmless warning
when the console code is disabled:

drivers/tty/serial/meson_uart.c:127:13: error: 'meson_uart_enable_tx_engine' defined but not used [-Werror=unused-function]

Let's move the function inside of the #ifdef to avoid the warning.

Fixes: ba50f1df13 ("serial: meson: remove unneeded variable assignment in meson_serial_port_write")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann 2017-05-22 15:37:03 +02:00 committed by Greg Kroah-Hartman
parent d653c43aef
commit 5fa4accf5e
1 changed files with 8 additions and 9 deletions
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17
drivers/tty/serial/meson_uart.c
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@ -124,15 +124,6 @@ static void meson_uart_stop_rx(struct uart_port *port)
writel(val, port->membase + AML_UART_CONTROL); writel(val, port->membase + AML_UART_CONTROL);
} }
static void meson_uart_enable_tx_engine(struct uart_port *port)
{
u32 val;
val = readl(port->membase + AML_UART_CONTROL);
val |= AML_UART_TX_EN;
writel(val, port->membase + AML_UART_CONTROL);
}
static void meson_uart_shutdown(struct uart_port *port) static void meson_uart_shutdown(struct uart_port *port)
{ {
unsigned long flags; unsigned long flags;
@ -451,6 +442,14 @@ static struct uart_ops meson_uart_ops = {
}; };
#ifdef CONFIG_SERIAL_MESON_CONSOLE #ifdef CONFIG_SERIAL_MESON_CONSOLE
static void meson_uart_enable_tx_engine(struct uart_port *port)
{
u32 val;
val = readl(port->membase + AML_UART_CONTROL);
val |= AML_UART_TX_EN;
writel(val, port->membase + AML_UART_CONTROL);
}
static void meson_console_putchar(struct uart_port *port, int ch) static void meson_console_putchar(struct uart_port *port, int ch)
{ {