[SERIAL]: Avoid 'statement with no effect' warnings.
When SUPPORT_SYSRQ is false, gcc can emit warnings for the uart_handle_sysrq_char() that results. Using an empty inline returning zero kills the warning. Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -385,11 +385,11 @@ int uart_resume_port(struct uart_driver *reg, struct uart_port *port);
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/*
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/*
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* The following are helper functions for the low level drivers.
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* The following are helper functions for the low level drivers.
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*/
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*/
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#ifdef SUPPORT_SYSRQ
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static inline int
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static inline int
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uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
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uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
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struct pt_regs *regs)
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struct pt_regs *regs)
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{
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{
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#ifdef SUPPORT_SYSRQ
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if (port->sysrq) {
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if (port->sysrq) {
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if (ch && time_before(jiffies, port->sysrq)) {
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if (ch && time_before(jiffies, port->sysrq)) {
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handle_sysrq(ch, regs, NULL);
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handle_sysrq(ch, regs, NULL);
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@ -398,11 +398,9 @@ uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
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}
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}
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port->sysrq = 0;
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port->sysrq = 0;
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}
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}
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#endif
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return 0;
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return 0;
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}
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}
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#else
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#define uart_handle_sysrq_char(port,ch,regs) (0)
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#endif
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/*
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/*
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* We do the SysRQ and SAK checking like this...
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* We do the SysRQ and SAK checking like this...
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