In sysfs_device_get() we should firstly check whether
devpath pointer is NULL before accessing it
Signed-off-by: Wenchao Hao <haowenc...@huawei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqian...@huawei.com>
Signed-off-by: Wu Bo <wub...@huawei.com>
---
usr/sysfs.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/usr/sysfs.c b/usr/sysfs.c
index 8d37c69..7f26572 100644
--- a/usr/sysfs.c
+++ b/usr/sysfs.c
@@ -168,9 +168,11 @@ struct sysfs_device *sysfs_device_get(const char *devpath)
int len;
char *pos;
+ if (!devpath)
+ return NULL;
+
/* we handle only these devpathes */
- if (devpath != NULL &&
- strncmp(devpath, "/devices/", 9) != 0 &&
+ if (strncmp(devpath, "/devices/", 9) != 0 &&
strncmp(devpath, "/subsystem/", 11) != 0 &&
strncmp(devpath, "/module/", 8) != 0 &&
strncmp(devpath, "/bus/", 5) != 0 &&
--
2.27.0
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