return (NULL); 
return; 
acpi_ut_strupr (	char                            *src_string){	char                            *string;	ACPI_FUNCTION_ENTRY ();	if (!src_string) {		return (NULL);	}	/* Walk entire string, uppercasing the letters */	for (string = src_string; *string; string++) {		*string = (char) ACPI_TOUPPER (*string);	}	return (src_string);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/0c9938cc75057c0fca1af55a55dcfc2842436695/utmisc.c/buggy/drivers/acpi/utilities/utmisc.c