serial: stm32: mark symbols static where possible
We get 2 warnings when building kernel with W=1: drivers/tty/serial/stm32-usart.c:63:5: warning: no previous prototype for 'stm32_pending_rx' [-Wmissing-prototypes] drivers/tty/serial/stm32-usart.c:88:15: warning: no previous prototype for 'stm32_get_char' [-Wmissing-prototypes] In fact, these two functions are only used in the file in which they are declared and don't need a declaration, but can be made static. So this patch marks these functions with 'static'. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -60,8 +60,8 @@ static void stm32_clr_bits(struct uart_port *port, u32 reg, u32 bits)
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writel_relaxed(val, port->membase + reg);
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}
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int stm32_pending_rx(struct uart_port *port, u32 *sr, int *last_res,
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bool threaded)
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static int stm32_pending_rx(struct uart_port *port, u32 *sr, int *last_res,
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bool threaded)
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{
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struct stm32_port *stm32_port = to_stm32_port(port);
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struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
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@ -85,7 +85,8 @@ int stm32_pending_rx(struct uart_port *port, u32 *sr, int *last_res,
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return 0;
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}
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unsigned long stm32_get_char(struct uart_port *port, u32 *sr, int *last_res)
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static unsigned long
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stm32_get_char(struct uart_port *port, u32 *sr, int *last_res)
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{
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struct stm32_port *stm32_port = to_stm32_port(port);
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struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
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