Thread (4 messages) 4 messages, 2 authors, 2018-01-10

[patch net 2/2] mlxsw: spectrum_qdisc: Don't use variable array in mlxsw_sp_tclass_congestion_enable

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From: Jiri Pirko <jiri@resnulli.us>
Date: 2018-01-10 10:42:48
Subsystem: mellanox ethernet switch drivers, networking drivers, the rest · Maintainers: Ido Schimmel, Petr Machata, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

Revision v1 of 25 in this series; 1 review trailer.

Revisions (25)
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  4. v2 [diff vs current]
  5. v1
  6. v1
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  11. v1
  12. v1
  13. v1
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  16. v1
  17. v1
  18. v2 [diff vs current]
  19. v1
  20. v1
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  22. v1
  23. v1 current
  24. v1
  25. v2 [diff vs current]
From: Jiri Pirko <redacted>

Resolve the sparse warning:
"sparse: Variable length array is used."
Use 2 arrays for 2 PRM register accesses.

Fixes: 96f17e0776c2 ("mlxsw: spectrum: Support RED qdisc offload")
Signed-off-by: Jiri Pirko <redacted>
Reviewed-by: Yuval Mintz <redacted>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
index c33beac5def0..b5397da94d7f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
@@ -46,7 +46,8 @@ mlxsw_sp_tclass_congestion_enable(struct mlxsw_sp_port *mlxsw_sp_port,
 				  int tclass_num, u32 min, u32 max,
 				  u32 probability, bool is_ecn)
 {
-	char cwtp_cmd[max_t(u8, MLXSW_REG_CWTP_LEN, MLXSW_REG_CWTPM_LEN)];
+	char cwtpm_cmd[MLXSW_REG_CWTPM_LEN];
+	char cwtp_cmd[MLXSW_REG_CWTP_LEN];
 	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 	int err;
 
@@ -60,10 +61,10 @@ mlxsw_sp_tclass_congestion_enable(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (err)
 		return err;
 
-	mlxsw_reg_cwtpm_pack(cwtp_cmd, mlxsw_sp_port->local_port, tclass_num,
+	mlxsw_reg_cwtpm_pack(cwtpm_cmd, mlxsw_sp_port->local_port, tclass_num,
 			     MLXSW_REG_CWTP_DEFAULT_PROFILE, true, is_ecn);
 
-	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(cwtpm), cwtp_cmd);
+	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(cwtpm), cwtpm_cmd);
 }
 
 static int
-- 
2.14.3
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