*: add -Wunused-parameter; fix resulting breakage

function                                             old     new   delta
procps_scan                                         1265    1298     +33
aliascmd                                             278     283      +5
parse_file_cmd                                       116     120      +4
dname_enc                                            373     377      +4
setcmd                                                90      93      +3
execcmd                                               57      60      +3
count_lines                                           72      74      +2
process_command_subs                                 340     339      -1
test_main                                            409     407      -2
mknod_main                                           179     177      -2
handle_incoming_and_exit                            2653    2651      -2
argstr                                              1312    1310      -2
shiftcmd                                             131     128      -3
exitcmd                                               46      43      -3
dotcmd                                               297     294      -3
breakcmd                                              86      83      -3
evalpipe                                             353     349      -4
evalcommand                                         1180    1176      -4
evalcmd                                              109     105      -4
send_tree                                            374     369      -5
mkfifo_main                                           82      77      -5
evalsubshell                                         152     147      -5
typecmd                                               75      69      -6
letcmd                                                61      55      -6
add_cmd                                             1190    1183      -7
main                                                 891     883      -8
ash_main                                            1415    1407      -8
parse_stream                                        1377    1367     -10
alloc_procps_scan                                     55       -     -55
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148)          Total: -94 bytes
   text    data     bss     dec     hex filename
 797195     658    7428  805281   c49a1 busybox_old
 797101     658    7428  805187   c4943 busybox_unstripped

2 files changed, 13 insertions, 12 deletions

diff --git a/modutils/insmod.c b/modutils/insmod.c
index 4620f6f95..079de6940 100644
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -651,7 +651,7 @@ static struct obj_symbol *arch_new_symbol(void);
 
 static enum obj_reloc arch_apply_relocation(struct obj_file *f,
                                       struct obj_section *targsec,
-                                      struct obj_section *symsec,
+                                      /*struct obj_section *symsec,*/
                                       struct obj_symbol *sym,
                                       ElfW(RelM) *rel, ElfW(Addr) value);
 
@@ -792,8 +792,9 @@ static char *m_fullName;
 /*======================================================================*/
 
 
-static int check_module_name_match(const char *filename, struct stat *statbuf,
-                                void *userdata, int depth)
+static int check_module_name_match(const char *filename,
+                struct stat *statbuf ATTRIBUTE_UNUSED,
+                void *userdata, int depth ATTRIBUTE_UNUSED)
 {
         char *fullname = (char *) userdata;
         char *tmp;
@@ -835,7 +836,7 @@ static struct obj_symbol *arch_new_symbol(void)
 static enum obj_reloc
 arch_apply_relocation(struct obj_file *f,
                                 struct obj_section *targsec,
-                                struct obj_section *symsec,
+                                /*struct obj_section *symsec,*/
                                 struct obj_symbol *sym,
                                 ElfW(RelM) *rel, ElfW(Addr) v)
 {
@@ -1751,7 +1752,7 @@ static int arch_list_add(ElfW(RelM) *rel, struct arch_list_entry **list,
 
 #if defined(USE_SINGLE)
 
-static int arch_single_init(ElfW(RelM) *rel, struct arch_single_entry *single,
+static int arch_single_init(/*ElfW(RelM) *rel,*/ struct arch_single_entry *single,
                              int offset, int size)
 {
         if (single->allocated == 0) {
@@ -1899,7 +1900,7 @@ static void arch_create_got(struct obj_file *f)
 #if defined(USE_GOT_ENTRIES)
                         if (got_allocate) {
                                 got_offset += arch_single_init(
-                                                rel, &intsym->gotent,
+                                                /*rel,*/ &intsym->gotent,
                                                 got_offset, GOT_ENTRY_SIZE);
 
                                 got_needed = 1;
@@ -1913,7 +1914,7 @@ static void arch_create_got(struct obj_file *f)
                                                 plt_offset, PLT_ENTRY_SIZE);
 #else
                                 plt_offset += arch_single_init(
-                                                rel, &intsym->pltent,
+                                                /*rel,*/ &intsym->pltent,
                                                 plt_offset, PLT_ENTRY_SIZE);
 #endif
                                 plt_needed = 1;
@@ -3220,7 +3221,7 @@ static int obj_relocate(struct obj_file *f, ElfW(Addr) base)
 
                         /* Do it! */
                         switch (arch_apply_relocation
-                                        (f, targsec, symsec, intsym, rel, value)
+                                        (f, targsec, /*symsec,*/ intsym, rel, value)
                         ) {
                         case obj_reloc_ok:
                                 break;
@@ -3299,7 +3300,7 @@ static int obj_create_image(struct obj_file *f, char *image)
 
 /*======================================================================*/
 
-static struct obj_file *obj_load(FILE * fp, int loadprogbits)
+static struct obj_file *obj_load(FILE * fp, int loadprogbits ATTRIBUTE_UNUSED)
 {
         struct obj_file *f;
         ElfW(Shdr) * section_headers;
@@ -4193,9 +4194,9 @@ static const char *moderror(int err)
 
 #if !ENABLE_FEATURE_2_4_MODULES
 int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int insmod_main(int argc, char **argv)
+int insmod_main(int argc ATTRIBUTE_UNUSED, char **argv)
 #else
-static int insmod_ng_main(int argc, char **argv)
+static int insmod_ng_main(int argc ATTRIBUTE_UNUSED, char **argv)
 #endif
 {
         long ret;
diff --git a/modutils/lsmod.c b/modutils/lsmod.c
index f1f78ff9f..baf0e2a9d 100644
--- a/modutils/lsmod.c
+++ b/modutils/lsmod.c
@@ -141,7 +141,7 @@ int lsmod_main(int argc, char **argv)
 #else /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */
 
 int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int lsmod_main(int argc, char **argv)
+int lsmod_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
         FILE *file = xfopen("/proc/modules", "r");