Hi John,
On 2015/11/10 0:32, John Garry wrote:
> This patch also includes relevant memory/pool
> free'ing and sas/scsi host removal
>
> Signed-off-by: John Garry <john.ga...@huawei.com>
> ---
> drivers/scsi/hisi_sas/hisi_sas_main.c | 71
> ++++++++++++++++++++++++++++++++++-
> 1 file changed, 70 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c
> b/drivers/scsi/hisi_sas/hisi_sas_main.c
> index 97f5368..7f81000 100644
> --- a/drivers/scsi/hisi_sas/hisi_sas_main.c
> +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
> @@ -126,6 +126,59 @@ err_out:
> return -ENOMEM;
> }
>
> +static void hisi_sas_free(struct hisi_hba *hisi_hba)
> +{
> + struct device *dev = &hisi_hba->pdev->dev;
> + int i, s;
> +
> + for (i = 0; i < hisi_hba->queue_count; i++) {
> + s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
> + if (hisi_hba->cmd_hdr[i])
> + dma_free_coherent(dev, s,
> + hisi_hba->cmd_hdr[i],
> + hisi_hba->cmd_hdr_dma[i]);
> +
> + s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
> + if (hisi_hba->complete_hdr[i])
> + dma_free_coherent(dev, s,
> + hisi_hba->complete_hdr[i],
> + hisi_hba->complete_hdr_dma[i]);
> + }
> +
> + dma_pool_destroy(hisi_hba->status_buffer_pool);
> + dma_pool_destroy(hisi_hba->command_table_pool);
> + dma_pool_destroy(hisi_hba->sge_page_pool);
> +
> + s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
> + if (hisi_hba->itct)
> + dma_free_coherent(dev, s,
> + hisi_hba->itct, hisi_hba->itct_dma);
> +
> + s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost);
> + if (hisi_hba->iost)
> + dma_free_coherent(dev, s,
> + hisi_hba->iost, hisi_hba->iost_dma);
> +
> + s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint);
> + if (hisi_hba->breakpoint)
> + dma_free_coherent(dev, s,
> + hisi_hba->breakpoint,
> + hisi_hba->breakpoint_dma);
> +
> +
> + s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
> + if (hisi_hba->initial_fis)
> + dma_free_coherent(dev, s,
> + hisi_hba->initial_fis,
> + hisi_hba->initial_fis_dma);
> +
> + s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2;
> + if (hisi_hba->sata_breakpoint)
> + dma_free_coherent(dev, s,
> + hisi_hba->sata_breakpoint,
> + hisi_hba->sata_breakpoint_dma);
> +
> +}
>
> static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
> const struct hisi_sas_hw *hw)
> @@ -188,8 +241,10 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct
> platform_device *pdev,
> if (IS_ERR(hisi_hba->ctrl))
> goto err_out;
>
> - if (hisi_sas_alloc(hisi_hba, shost))
> + if (hisi_sas_alloc(hisi_hba, shost)) {
> + hisi_sas_free(hisi_hba);
> goto err_out;
> + }
>
> return shost;
> err_out:
> @@ -270,6 +325,20 @@ err_out_ha:
> }
> EXPORT_SYMBOL_GPL(hisi_sas_probe);
>
> +int hisi_sas_remove(struct platform_device *pdev)
> +{
> + struct sas_ha_struct *sha = platform_get_drvdata(pdev);
> + struct hisi_hba *hisi_hba = sha->lldd_ha;
> +
> + sas_unregister_ha(sha);
> + sas_remove_host(sha->core.shost);
> + scsi_remove_host(sha->core.shost);
scsi host should be removed before detaching SAS transport.
See more information:
http://www.spinics.net/lists/linux-scsi/msg90088.html
Thanks,
Wei
> + hisi_sas_free(hisi_hba);
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(hisi_sas_remove);
> +
> static __init int hisi_sas_init(void)
> {
> pr_info("hisi_sas: driver version %s\n", DRV_VERSION);
>
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