hwclock: fix compiler warnings

hwclock.c: In function 'manipulate_epoch':
hwclock.c:1299:29: warning: unused parameter 'getepoch' [-Wunused-parameter]
hwclock.c:1299:50: warning: unused parameter 'setepoch' [-Wunused-parameter]
hwclock.c:1300:14: warning: unused parameter 'epoch_opt' [-Wunused-parameter]
hwclock.c:1300:36: warning: unused parameter 'testing' [-Wunused-parameter]
hwclock.c: In function 'usage':
hwclock.c:1373:1: warning: embedding a directive within macro arguments is not portable [enabled by default]
hwclock.c:1377:1: warning: embedding a directive within macro arguments is not portable [enabled by default]
hwclock.c:1383:1: warning: embedding a directive within macro arguments is not portable [enabled by default]
hwclock.c:1385:1: warning: embedding a directive within macro arguments is not portable [enabled by default]

cmos.c: In function 'outb':
cmos.c:84:15: warning: unused parameter 'a' [-Wunused-parameter]
cmos.c:84:22: warning: unused parameter 'b' [-Wunused-parameter]
cmos.c: In function 'inb':
cmos.c:88:13: warning: unused parameter 'c' [-Wunused-parameter]
cmos.c: In function 'atomic':
cmos.c:265:20: warning: unused parameter 'name' [-Wunused-parameter]
cmos.c: In function 'i386_iopl':
cmos.c:544:32: warning: unused parameter 'level' [-Wunused-parameter]
cmos.c: In function 'get_permissions_cmos':
cmos.c:565:8: warning: unused variable 'errsv' [-Wunused-variable]

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

1 files changed, 20 insertions, 11 deletions

diff --git a/hwclock/cmos.c b/hwclock/cmos.c
index 89bcc50f9..09b1555dd 100644
--- a/hwclock/cmos.c
+++ b/hwclock/cmos.c
@@ -66,11 +66,12 @@
  * not export that header.
  */
 #undef __i386__
-void outb(int a, int b)
+void outb(int a __attribute__ ((__unused__)),
+	  int b __attribute__ ((__unused__)))
 {
 }
 
-int inb(int c)
+int inb(int c __attribute__ ((__unused__)))
 {
 	return 0;
 }
@@ -81,11 +82,12 @@ int inb(int c)
 extern unsigned int inb(unsigned long port);
 extern void outb(unsigned char b, unsigned long port);
 #else
-void outb(int a, int b)
+void outb(int a __attribute__ ((__unused__)),
+	  int b __attribute__ ((__unused__)))
 {
 }
 
-int inb(int c)
+int inb(int c __attribute__ ((__unused__)))
 {
 	return 0;
 }
@@ -298,7 +300,9 @@ atomic(const char *name, unsigned long (*op) (unsigned long), unsigned long arg)
  * TODO: optimize the access to CMOS by mlockall(MCL_CURRENT) and SCHED_FIFO
  */
 static unsigned long
-atomic(const char *name, unsigned long (*op) (unsigned long), unsigned long arg)
+atomic(const char *name __attribute__ ((__unused__)),
+       unsigned long (*op) (unsigned long),
+       unsigned long arg)
 {
 	return (*op) (arg);
 }
@@ -603,20 +607,26 @@ static int set_hardware_clock_cmos(const struct tm *new_broken_time)
 	return 0;
 }
 
+#if defined(__i386__) || defined(__alpha__)
+# if defined(HAVE_IOPL)
 static int i386_iopl(const int level)
 {
-#if defined(__i386__) || defined(__alpha__)
-#if defined(HAVE_IOPL)
 	extern int iopl(const int lvl);
 	return iopl(level);
-#else
+}
+# else
+static int i386_iopl(const int level __attribute__ ((__unused__)))
+{
 	extern int ioperm(unsigned long from, unsigned long num, int turn_on);
 	return ioperm(clock_ctl_addr, 2, 1);
-#endif
+}
+# endif
 #else
+static int i386_iopl(const int level __attribute__ ((__unused__)))
+{
 	return -2;
-#endif
 }
+#endif
 
 static int get_permissions_cmos(void)
 {
@@ -624,7 +634,6 @@ static int get_permissions_cmos(void)
 
 	if (use_dev_port) {
 		if ((dev_port_fd = open("/dev/port", O_RDWR)) < 0) {
-			int errsv = errno;
 			warn(_("Cannot open /dev/port"));
 			rc = 1;
 		} else