From fc8b6f81a54810faa844ea21d08ef47f95b8f4e0 Mon Sep 17 00:00:00 2001
From: Aaron Marcher <me@drkhsh.at>
Date: Thu, 17 May 2018 18:29:25 +0200
Subject: [PATCH] Mark unused parameters, fix compiler warnings

---
 components/battery.c     | 6 +++++-
 components/temperature.c | 4 +++-
 util.h                   | 2 ++
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/components/battery.c b/components/battery.c
index a63b9d0..4c6b4f5 100644
--- a/components/battery.c
+++ b/components/battery.c
@@ -52,11 +52,13 @@
 	#include <unistd.h>
 
 	const char *
-	battery_perc(const char *null)
+	battery_perc(const char *bat)
 	{
 		struct apm_power_info apm_info;
 		int fd;
 
+		UNUSED(bat); /* no way to specify battery on OpenBSD */
+
 		fd = open("/dev/apm", O_RDONLY);
 		if (fd < 0) {
 			fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
@@ -88,6 +90,8 @@
 			{ APM_AC_OFF,     "-" },
 		};
 
+		UNUSED(bat); /* no way to specify battery on OpenBSD */
+
 		fd = open("/dev/apm", O_RDONLY);
 		if (fd < 0) {
 			fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
diff --git a/components/temperature.c b/components/temperature.c
index 35bdb01..b29eb86 100644
--- a/components/temperature.c
+++ b/components/temperature.c
@@ -21,12 +21,14 @@
 	#include <sys/sysctl.h>
 
 	const char *
-	temp(const char *null)
+	temp(const char *file)
 	{
 		int mib[5];
 		size_t size;
 		struct sensor temp;
 
+		UNUSED(file); /* no temperature file on OpenBSD */
+
 		mib[0] = CTL_HW;
 		mib[1] = HW_SENSORS;
 		mib[2] = 0; /* cpu0 */
diff --git a/util.h b/util.h
index e90c29d..53e4104 100644
--- a/util.h
+++ b/util.h
@@ -3,5 +3,7 @@ extern char buf[1024];
 
 #define LEN(x) (sizeof (x) / sizeof *(x))
 
+#define UNUSED(x) (void)x
+
 const char *bprintf(const char *fmt, ...);
 int pscanf(const char *path, const char *fmt, ...);