init/main.c: silence some -Wunused-parameter warnings

There are a bunch of callbacks with unused arguments, go ahead and silence
those so "make KCFLAGS=-W init/main.o" is a little quieter.  Here's a
little sample:

init/main.c:182:43: warning: unused parameter 'str' [-Wunused-parameter]
static int __init set_reset_devices(char *str)

Link: https://lkml.kernel.org/r/20210519162341.1275452-1-ahalaney@redhat.com
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

diff --git a/init/main.c b/init/main.c
index d4f7af4cf5609f580abd0237918f01d5027de2ce..998545fca80973a948aca031b1bb7edba647d233 100644 (file)
--- a/init/main.c
+++ b/init/main.c
@@ -179,7 +179,7 @@ EXPORT_SYMBOL_GPL(static_key_initialized);
 unsigned int reset_devices;
 EXPORT_SYMBOL(reset_devices);
 
-static int __init set_reset_devices(char *str)
+static int __init set_reset_devices(char *str __always_unused)
 {
        reset_devices = 1;
        return 1;
@@ -229,13 +229,13 @@ static bool __init obsolete_checksetup(char *line)
 unsigned long loops_per_jiffy = (1<<12);
 EXPORT_SYMBOL(loops_per_jiffy);
 
-static int __init debug_kernel(char *str)
+static int __init debug_kernel(char *str __always_unused)
 {
        console_loglevel = CONSOLE_LOGLEVEL_DEBUG;
        return 0;
 }
 
-static int __init quiet_kernel(char *str)
+static int __init quiet_kernel(char *str __always_unused)
 {
        console_loglevel = CONSOLE_LOGLEVEL_QUIET;
        return 0;
@@ -478,7 +478,7 @@ static void __init setup_boot_config(void)
        get_boot_config_from_initrd(NULL, NULL);
 }
 
-static int __init warn_bootconfig(char *str)
+static int __init warn_bootconfig(char *str __always_unused)
 {
        pr_warn("WARNING: 'bootconfig' found on the kernel command line but CONFIG_BOOT_CONFIG is not set.\n");
        return 0;
@@ -504,7 +504,8 @@ static void __init repair_env_string(char *param, char *val)
 
 /* Anything after -- gets handed straight to init. */
 static int __init set_init_arg(char *param, char *val,
-                              const char *unused, void *arg)
+                              const char *unused __always_unused,
+                              void *arg __always_unused)
 {
        unsigned int i;
 
@@ -529,7 +530,8 @@ static int __init set_init_arg(char *param, char *val,
  * unused parameters (modprobe will find them in /proc/cmdline).
  */
 static int __init unknown_bootoption(char *param, char *val,
-                                    const char *unused, void *arg)
+                                    const char *unused __always_unused,
+                                    void *arg __always_unused)
 {
        size_t len = strlen(param);
 
@@ -723,7 +725,8 @@ noinline void __ref rest_init(void)
 
 /* Check for early params. */
 static int __init do_early_param(char *param, char *val,
-                                const char *unused, void *arg)
+                                const char *unused __always_unused,
+                                void *arg __always_unused)
 {
        const struct obs_kernel_param *p;
 
@@ -1343,8 +1346,10 @@ static const char *initcall_level_names[] __initdata = {
        "late",
 };
 
-static int __init ignore_unknown_bootoption(char *param, char *val,
-                              const char *unused, void *arg)
+static int __init ignore_unknown_bootoption(char *param __always_unused,
+                                           char *val __always_unused,
+                                           const char *unused __always_unused,
+                                           void *arg __always_unused)
 {
        return 0;
 }
@@ -1482,7 +1487,7 @@ void __weak free_initmem(void)
        free_initmem_default(POISON_FREE_INITMEM);
 }
 
-static int __ref kernel_init(void *unused)
+static int __ref kernel_init(void *unused __always_unused)
 {
        int ret;