freebsd man page for device_printf

DEVICE_PRINTF(9)					   BSD Kernel Developer's Manual					  DEVICE_PRINTF(9)

NAME
     device_printf -- formatted output conversion

SYNOPSIS
     #include <sys/param.h>
     #include <sys/bus.h>

     int
     device_printf(device_t dev, const char *fmt, ...);

DESCRIPTION
     The device_printf() function is a convenience interface to the printf(9) function.  It outputs the name of the dev device, followed by a
     colon and a space, and then what printf(9) would print if you passed fmt and the remaining arguments to it.

RETURN VALUES
     The device_printf() function returns the number of characters displayed.

SEE ALSO
     printf(3), printf(9)

BSD
								  April 21, 2003							       BSD