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path: root/drivers/net/dsa/ocelot/felix_vsc9959.c
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Diffstat (limited to 'drivers/net/dsa/ocelot/felix_vsc9959.c')
-rw-r--r--drivers/net/dsa/ocelot/felix_vsc9959.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 4a6e52929d25..3c5509e75a54 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -1070,6 +1070,9 @@ static u64 vsc9959_tas_remaining_gate_len_ps(u64 gate_len_ns)
if (gate_len_ns == U64_MAX)
return U64_MAX;
+ if (gate_len_ns < VSC9959_TAS_MIN_GATE_LEN_NS)
+ return 0;
+
return (gate_len_ns - VSC9959_TAS_MIN_GATE_LEN_NS) * PSEC_PER_NSEC;
}