idlestat: fix number of cpus checkHEADmaster

Currently the a -ve failure value is being handled as an error
for the number of CPUs. Also check for zero cpus as this should
be considered as invalid.  This also stops a zero sized calloc
based on zero cpus being reported as an error by static analysis.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/idlestat.c b/idlestat.c
index 8c3a01e..96ac38b 100644
--- a/idlestat.c
+++ b/idlestat.c
@@ -360,7 +360,7 @@ static struct init_pstates *build_init_pstates(struct cpu_topology *topo)
 	unsigned int *freqs;
 
 	nrcpus = sysconf(_SC_NPROCESSORS_CONF);
-	if (nrcpus < 0)
+	if (nrcpus <= 0)
 		return NULL;
 
 	initp = calloc(sizeof(*initp), 1);