On Thu, Jul 23, 2015 at 8:43 AM, Jiri Pirko <[email protected]> wrote:
> From: Jiri Pirko <[email protected]>
>
> Add PCI bus implementation for Mellanox Technologies Switch ASICs. This
> includes firmware initialization, async queues manipulation and command
> interface implementation.
>
> Signed-off-by: Jiri Pirko <[email protected]>
> Signed-off-by: Ido Schimmel <[email protected]>
> Signed-off-by: Elad Raz <[email protected]>
> ---
[cut]
> +static int mlxsw_pci_fw_area_init(struct mlxsw_pci *mlxsw_pci, char *mbox,
> + u16 num_pages)
> +{
> + struct mlxsw_pci_mem_item *mem_item;
> + int i;
> + int err;
Need to init err to zero here
> +
> + mlxsw_pci->fw_area.items = kcalloc(num_pages, sizeof(*mem_item),
> + GFP_KERNEL);
> + if (!mlxsw_pci->fw_area.items)
> + return -ENOMEM;
> + mlxsw_pci->fw_area.num_pages = num_pages;
> +
> + mlxsw_cmd_mbox_zero(mbox);
> + for (i = 0; i < num_pages; i++) {
> + mem_item = &mlxsw_pci->fw_area.items[i];
> +
> + mem_item->size = MLXSW_PCI_PAGE_SIZE;
> + mem_item->buf = pci_alloc_consistent(mlxsw_pci->pdev,
> + mem_item->size,
> + &mem_item->mapaddr);
> + if (!mem_item->buf)
> + goto err_alloc;
> + mlxsw_cmd_mbox_map_fa_pa_set(mbox, i, mem_item->mapaddr);
> + mlxsw_cmd_mbox_map_fa_log2size_set(mbox, i, 0); /* 1 page */
> + }
> +
> + err = mlxsw_cmd_map_fa(mlxsw_pci->core, mbox, num_pages);
> + if (err)
> + goto err_cmd_map_fa;
> +
> + return 0;
> +
> +err_cmd_map_fa:
> +err_alloc:
> + for (i--; i >= 0; i--) {
> + mem_item = &mlxsw_pci->fw_area.items[i];
> +
> + pci_free_consistent(mlxsw_pci->pdev, mem_item->size,
> + mem_item->buf, mem_item->mapaddr);
> + }
> + kfree(mlxsw_pci->fw_area.items);
> + return err;
> +}
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