From: Petr Machata <petrm@mellanox.com>
Date: Thu, 20 Sep 2018 09:21:30 +0300
Subject: mlxsw: spectrum_buffers: Pass SBPM min_size in cells
Patch-mainline: v4.20-rc1
Git-commit: 41057e28288b89da91d535ff3244bfcf90ebc97c
References: bsc#1112374

The SBPM register configures the shared buffer allocation and
configuration per port and pool. The min_buff value is the buffer size
dedicated to this single function, and is configured in cells.
Currently, all sb_pm entries have 0 for min_buff, and therefore the
actual unit is immaterial. However, in a follow-up patch we want to add
entries with non-zero minimum.

Therefore pass the min_buff from the sb_pm table through the cell
conversion before handing it over to mlxsw_sp_sb_pm_write().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
@@ -523,9 +523,11 @@ static int mlxsw_sp_port_sb_pms_init(str
 
 	for (i = 0; i < MLXSW_SP_SB_PMS_LEN; i++) {
 		const struct mlxsw_sp_sb_pm *pm = &mlxsw_sp_sb_pms[i];
+		u32 min_buff;
 
+		min_buff = mlxsw_sp_bytes_cells(mlxsw_sp, pm->min_buff);
 		err = mlxsw_sp_sb_pm_write(mlxsw_sp, mlxsw_sp_port->local_port,
-					   i, pm->min_buff, pm->max_buff);
+					   i, min_buff, pm->max_buff);
 		if (err)
 			return err;
 	}