[PATCH net-next 2/7] net: dsa: mv88e6xxx: 6185 has only 256 FDBs

[Vivien Didelot]

The 6185 family has only 256 indexable address databases, while the
others (such as 6352) have 4095. Explicit and use these maximum values
in the _mv88e6xxx_fid_new function.

Signed-off-by: Vivien Didelot <vivien.didelot@xxxxxxxxxxxxxxxxxxxx>
---
 drivers/net/dsa/mv88e6xxx.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index 1d9ae48..1d9b5dd 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -1575,8 +1575,12 @@ static int _mv88e6xxx_fid_new(struct dsa_switch *ds, u16 *fid)
 	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
 	DECLARE_BITMAP(fid_bitmap, MV88E6XXX_N_FID);
 	struct mv88e6xxx_vtu_stu_entry vlan;
+	u16 max = 4095;
 	int i, err;
 
+	if (mv88e6xxx_6185_family(ds))
+		max = 256;
+
 	bitmap_zero(fid_bitmap, MV88E6XXX_N_FID);
 
 	/* Set every FID bit used by the (un)bridged ports */
@@ -1608,7 +1612,7 @@ static int _mv88e6xxx_fid_new(struct dsa_switch *ds, u16 *fid)
 	 * databases are not needed. Return the next positive available.
 	 */
 	*fid = find_next_zero_bit(fid_bitmap, MV88E6XXX_N_FID, 1);
-	if (unlikely(*fid == MV88E6XXX_N_FID))
+	if (unlikely(*fid > max))
 		return -ENOSPC;
 
 	/* Clear the database */
-- 
2.7.4