Port battery_remaining to Linux

[slstatus.git] / components / temperature.c

diff --git a/components/temperature.c b/components/temperature.c
index 1353993..64199f5 100644 (file)
--- a/components/temperature.c
+++ b/components/temperature.c
@@ -16,12 +16,12 @@
        #include <errno.h>
        #include <stdio.h>
        #include <string.h>
-       #include <sys/sysctl.h>
-       #include <sys/time.h>
+       #include <sys/time.h> /* before <sys/sensors.h> for struct timeval */
        #include <sys/sensors.h>
+       #include <sys/sysctl.h>
 
        const char *
-       temp(const char *null)
+       temp(const char *unused)
        {
                int mib[5];
                size_t size;
@@ -35,9 +35,8 @@
 
                size = sizeof(temp);
 
-               if (sysctl(mib, 5, &temp, &size, NULL, 0) == -1) {
-                       fprintf(stderr, "sysctl 'SENSOR_TEMP': %s\n",
-                               strerror(errno));
+               if (sysctl(mib, 5, &temp, &size, NULL, 0) < 0) {
+                       warn("sysctl 'SENSOR_TEMP':");
                        return NULL;
                }