From 19baa56fb53bb3de12e0a022d74a32b8bc8de6b7 Mon Sep 17 00:00:00 2001
From: Xiang Xiao <xiaoxiang@xiaomi.com>
Date: Sun, 10 Dec 2023 10:56:12 +0800
Subject: [PATCH] procfs/cpuinfo: Zero copylen in cpuinfo_read

to avoid return the negative number

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
---
 fs/procfs/fs_procfscpuinfo.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/procfs/fs_procfscpuinfo.c b/fs/procfs/fs_procfscpuinfo.c
index 73f7ffb40d..c818dd6284 100644
--- a/fs/procfs/fs_procfscpuinfo.c
+++ b/fs/procfs/fs_procfscpuinfo.c
@@ -157,6 +157,10 @@ static ssize_t cpuinfo_read(FAR struct file *filep, FAR char *buffer,
     {
       filep->f_pos += copylen;
     }
+  else
+    {
+      copylen = 0;
+    }
 
   return copylen;
 }