more of -Wall fixes from Cristian Ionescu-Idbohrn.
Some are fixing real bugs.

function                                             old     new   delta
syslogd_main                                         938     958     +20
get_signum                                           136     143      +7
obj_load                                             777     782      +5
recv_from_to                                         210     214      +4
get_next_block                                      1795    1799      +4
display_topmem_process_list                         1117    1121      +4
logread_main                                         484     487      +3
buffer_fill_and_print                                 73      76      +3
kill_main                                            687     689      +2
ll_remember_index                                    240     241      +1
do_stats                                             452     453      +1
if_readconf                                          166     165      -1
display_process_list                                1192    1191      -1
run_applet_and_exit                                  507     505      -2
print_signames                                        33      31      -2
parse_one_line                                      1092    1090      -2
find_out_spec                                         57      55      -2
add_ksymoops_symbols                                 421     419      -2
ash_main                                            1407    1402      -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 11/8 up/down: 54/-17)            Total: 37 bytes

diff --git a/miscutils/makedevs.c b/miscutils/makedevs.c
index 43e4b8c..3b45d70 100644
--- a/miscutils/makedevs.c
+++ b/miscutils/makedevs.c
@@ -99,12 +99,12 @@
 
 	while ((line = xmalloc_fgetline(table)) != NULL) {
 		char type;
-		unsigned int mode = 0755;
-		unsigned int major = 0;
-		unsigned int minor = 0;
-		unsigned int count = 0;
-		unsigned int increment = 0;
-		unsigned int start = 0;
+		unsigned mode = 0755;
+		unsigned major = 0;
+		unsigned minor = 0;
+		unsigned count = 0;
+		unsigned increment = 0;
+		unsigned start = 0;
 		char name[41];
 		char user[41];
 		char group[41];
@@ -121,7 +121,7 @@
 		{
 			if (*line=='\0' || *line=='#' || isspace(*line))
 				continue;
-			bb_error_msg("line %d invalid: '%s'", linenum, line);
+			bb_error_msg("invalid line %d: '%s'", linenum, line);
 			ret = EXIT_FAILURE;
 			continue;
 		}
@@ -140,7 +140,7 @@
 				ret = EXIT_FAILURE;
 				goto loop;
 			}
-			if ((mode != -1) && (chmod(full_name, mode) < 0)){
+			if (chmod(full_name, mode) < 0) {
 				bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
 				ret = EXIT_FAILURE;
 				goto loop;
@@ -157,7 +157,7 @@
 				ret = EXIT_FAILURE;
 				goto loop;
 			}
-			if ((mode != -1) && (chmod(full_name, mode) < 0)){
+			if (chmod(full_name, mode) < 0) {
 				bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
 				ret = EXIT_FAILURE;
 				goto loop;
@@ -180,7 +180,7 @@
 			}
 
 			if (count > 0) {
-				int i;
+				unsigned i;
 				char *full_name_inc;
 
 				full_name_inc = xmalloc(strlen(full_name) + 4);
@@ -195,7 +195,7 @@
 						bb_perror_msg("line %d: chown failed for %s", linenum, full_name_inc);
 						ret = EXIT_FAILURE;
 					}
-					if ((mode != -1) && (chmod(full_name_inc, mode) < 0)){
+					if (chmod(full_name_inc, mode) < 0) {
 						bb_perror_msg("line %d: chmod failed for %s", linenum, full_name_inc);
 						ret = EXIT_FAILURE;
 					}
@@ -211,7 +211,7 @@
 					bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
 					ret = EXIT_FAILURE;
 				}
-				if ((mode != -1) && (chmod(full_name, mode) < 0)){
+				if (chmod(full_name, mode) < 0) {
 					bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
 					ret = EXIT_FAILURE;
 				}