Fix potentially improper fd usage

Check for -1 after open

Change-Id: Icd29828a05f32155bc1a58432492976d5a6ad70b
Signed-off-by: Patrick Porlan <patrick.porlan@intel.com>

diff --git a/accel-calibration.c b/accel-calibration.c
index 8a21a05..9367774 100644 (file)
--- a/accel-calibration.c
+++ b/accel-calibration.c
@@ -201,7 +201,8 @@ void accel_cal_store (int s)
 
        fd = open(ACCEL_CALIBRATION_PATH, O_WRONLY | O_TRUNC | O_CREAT, S_IRUSR);
 
-       write(fd, cal_data, sizeof(accel_cal_t));
-
-       close(fd);
+       if (fd != -1) {
+               write(fd, cal_data, sizeof(accel_cal_t));
+               close(fd);
+       }
 }