The member qc_idx of struct if_quotactl is unsigned and hence it can never be less than zero.

diff --git a/drivers/staging/lustre/lustre/lov/lov_obd.c b/drivers/staging/lustre/lustre/lov/lov_obd.c

@@ -1487,7 +1487,7 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len, struct obd_quotactl *oqctl; if (qctl->qc_valid == QC_OSTIDX) { - if (qctl->qc_idx < 0 || count <= qctl->qc_idx) + if (count <= qctl->qc_idx)

return -EINVAL;