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[SERIAL]: Avoid 'statement with no effect' warnings.

Browse source 
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>
This commit is contained in:
David S. Miller 2005-09-06 13:57:08 -07:00
parent 4706df3d3c
commit 93c37f2921
1 changed files with 2 additions and 4 deletions
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6
include/linux/serial_core.h
View file

@ -385,11 +385,11 @@ int uart_resume_port(struct uart_driver *reg, struct uart_port *port);
/* /*
* The following are helper functions for the low level drivers. * The following are helper functions for the low level drivers.
*/ */
#ifdef SUPPORT_SYSRQ
static inline int static inline int
uart_handle_sysrq_char(struct uart_port *port, unsigned int ch, uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
struct pt_regs *regs) struct pt_regs *regs)
{ {
#ifdef SUPPORT_SYSRQ
if (port->sysrq) { if (port->sysrq) {
if (ch && time_before(jiffies, port->sysrq)) { if (ch && time_before(jiffies, port->sysrq)) {
handle_sysrq(ch, regs, NULL); handle_sysrq(ch, regs, NULL);
@ -398,11 +398,9 @@ uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
} }
port->sysrq = 0; port->sysrq = 0;
} }
#endif
return 0; return 0;
} }
#else
#define uart_handle_sysrq_char(port,ch,regs) (0)
#endif
/* /*
* We do the SysRQ and SAK checking like this... * We do the SysRQ and SAK checking like this...