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hisi_sas: Add hisi_sas_remove

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This patch also includes relevant memory/pool freeing and sas/scsi host
removal.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2015-11-18 00:50:35 +08:00 committed by Martin K. Petersen
parent 6be6de1889
commit 89d533223d
1 changed files with 70 additions and 1 deletions
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71
drivers/scsi/hisi_sas/hisi_sas_main.c
View file

@ -126,6 +126,59 @@ static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
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 @@ int hisi_sas_probe(struct platform_device *pdev,
}
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;
scsi_remove_host(sha->core.shost);
sas_unregister_ha(sha);
sas_remove_host(sha->core.shost);
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);