From 8d9da4672f94b4914d3b9318d911bfd1fcbfc9a1 Mon Sep 17 00:00:00 2001 From: Amit Cohen Date: Wed, 15 Nov 2023 13:17:20 +0100 Subject: [PATCH] mlxsw: pci: Move software reset code to a separate function In general, the existing flow of software reset in the driver is: 1. Wait for system ready status. 2. Send MRSR command, to start the reset. 3. Wait for system ready status. This flow will be extended once a new reset command is supported. As a preparation, move step #2 to a separate function. Signed-off-by: Amit Cohen Reviewed-by: Petr Machata Signed-off-by: Ido Schimmel Signed-off-by: Petr Machata Reviewed-by: Simon Horman Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/pci.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index fe0b8a38d44e3c..080881c94c5a40 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -1476,11 +1476,18 @@ static int mlxsw_pci_sys_ready_wait(struct mlxsw_pci *mlxsw_pci, return -EBUSY; } +static int mlxsw_pci_reset_sw(struct mlxsw_pci *mlxsw_pci) +{ + char mrsr_pl[MLXSW_REG_MRSR_LEN]; + + mlxsw_reg_mrsr_pack(mrsr_pl, MLXSW_REG_MRSR_COMMAND_SOFTWARE_RESET); + return mlxsw_reg_write(mlxsw_pci->core, MLXSW_REG(mrsr), mrsr_pl); +} + static int mlxsw_pci_reset(struct mlxsw_pci *mlxsw_pci, const struct pci_device_id *id) { struct pci_dev *pdev = mlxsw_pci->pdev; - char mrsr_pl[MLXSW_REG_MRSR_LEN]; u32 sys_status; int err; @@ -1491,8 +1498,7 @@ mlxsw_pci_reset(struct mlxsw_pci *mlxsw_pci, const struct pci_device_id *id) return err; } - mlxsw_reg_mrsr_pack(mrsr_pl, MLXSW_REG_MRSR_COMMAND_SOFTWARE_RESET); - err = mlxsw_reg_write(mlxsw_pci->core, MLXSW_REG(mrsr), mrsr_pl); + err = mlxsw_pci_reset_sw(mlxsw_pci); if (err) return err;