From b9fa5286d534cacfa0ea73d6dde2973a27a98533 Mon Sep 17 00:00:00 2001
From: Sergei Semenchuk <pdp.eleven11@gmail.com>
Date: Sat, 11 Dec 2021 09:57:04 +0000
Subject: [PATCH] return error if cpufreq's are empty

Signed-off-by: Sergei Semenchuk <pdp.eleven11@gmail.com>
---
 sysfs/system_cpu.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sysfs/system_cpu.go b/sysfs/system_cpu.go
index b369568a0..a8d0ac2d1 100644
--- a/sysfs/system_cpu.go
+++ b/sysfs/system_cpu.go
@@ -181,6 +181,10 @@ func (fs FS) SystemCpufreq() ([]SystemCPUCpufreqStats, error) {
 		return nil, err
 	}
 
+	if len(systemCpufreq) == 0 {
+		return nil, fmt.Errorf("could not find any cpufreq files: %w", os.ErrNotExist)
+	}
+
 	return systemCpufreq, nil
 }