[PATCH 1/4] cpu: maxfreq: check for unlikely event that no CPUs in cpu list

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

there is a very unlikely possibility that the cpu list contains
no CPU information, so add a check for this corner case.

Found using clang's static analyzer

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/cpu/maxfreq/maxfreq.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/cpu/maxfreq/maxfreq.c b/src/cpu/maxfreq/maxfreq.c
index 031b13c..b424b17 100644
--- a/src/cpu/maxfreq/maxfreq.c
+++ b/src/cpu/maxfreq/maxfreq.c
@@ -78,6 +78,11 @@ static int maxfreq_test1(fwts_framework *fw)
 		if (strstr(fwts_text_list_text(item), "model name"))
 			cpus++;
 	}
+	if (!cpus) {
+		fwts_log_error(fw, "Cannot find any CPUs.");
+		fwts_list_free(cpuinfo, free);
+		return FWTS_ERROR;
+	}
 
 	if ((cpufreq = calloc(cpus, sizeof(double))) == NULL) {
 		fwts_log_error(fw, "Cannot create cpu frequency array.");
-- 
2.5.0