[IA64] aliasing-test: fix gcc warnings on non-ia64

Eliminate all build warnings. OK, these build warnings are from
a build on x86_64. When I build on ia64, I don't see warnings.

Now builds cleanly on ia64 and x86_64.

Documentation/ia64/aliasing-test.c: In function 'map_mem':
Documentation/ia64/aliasing-test.c:39: warning: implicit declaration of function 'ioctl'
Documentation/ia64/aliasing-test.c: In function 'scan_rom':
Documentation/ia64/aliasing-test.c:183: warning: format '%ld' expects type 'long int', but argument 4 has type 'int'
Documentation/ia64/aliasing-test.c: At top level:
Documentation/ia64/aliasing-test.c:208: warning: function declaration isn't a prototype
Documentation/ia64/aliasing-test.c: In function 'main':
Documentation/ia64/aliasing-test.c:259: warning: control reaches end of non-void function
Documentation/ia64/aliasing-test.c: In function 'scan_rom':
Documentation/ia64/aliasing-test.c:152: warning: 'rc' may be used uninitialized in this function
Documentation/ia64/aliasing-test.c: In function 'scan_tree':
Documentation/ia64/aliasing-test.c:68: warning: 'rc' may be used uninitialized in this function

Signed-off-by: Randy Dunlap <[e-mail]>
Acked-by: Bjorn Helgaas <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Tony Luck <[e-mail]>

Documentation/ia64/aliasing-test.c

···
 #include <fcntl.h>
 #include <fnmatch.h>
 #include <string.h>
+#include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
 #include <unistd.h>
···
 {
 	struct dirent **namelist;
 	char *name, *path2;
-	int i, n, r, rc, result = 0;
+	int i, n, r, rc = 0, result = 0;
 	struct stat buf;
 
 	n = scandir(path, &namelist, 0, alphasort);
···
 		free(namelist[i]);
 	}
 	free(namelist);
-	return rc;
+	return result;
 }
 
 char buf[1024];
···
 {
 	struct dirent **namelist;
 	char *name, *path2;
-	int i, n, r, rc, result = 0;
+	int i, n, r, rc = 0, result = 0;
 	struct stat buf;
 
 	n = scandir(path, &namelist, 0, alphasort);
···
 			 * important thing is that no MCA happened.
 			 */
 			if (rc > 0)
-				fprintf(stderr, "PASS: %s read %ld bytes\n", path2, rc);
+				fprintf(stderr, "PASS: %s read %d bytes\n", path2, rc);
 			else {
 				fprintf(stderr, "PASS: %s not readable\n", path2);
 				return rc;
···
 		free(namelist[i]);
 	}
 	free(namelist);
-	return rc;
+	return result;
 }
 
-int main()
+int main(void)
 {
 	int rc;
 
···
 	scan_tree("/proc/bus/pci", "??.?", 0xA0000, 0x20000, 0);
 	scan_tree("/proc/bus/pci", "??.?", 0xC0000, 0x40000, 1);
 	scan_tree("/proc/bus/pci", "??.?", 0, 1024*1024, 0);
+
+	return rc;
 }