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[PATCH v5 12/32] scsi: hisi_sas: set dev DMA mask

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  [PATCH v5 12/32] scsi: hisi_sas: set dev DMA mask John Garry <john.garry@huawei.com> - 2015-11-17 17:50 +0100

#1271414 — [PATCH v5 12/32] scsi: hisi_sas: set dev DMA mask

Signed-off-by: John Garry <john.garry@huawei.com>
---
 drivers/scsi/hisi_sas/hisi_sas_main.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 8cd1b55..d7d9516 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -311,6 +311,14 @@ int hisi_sas_probe(struct platform_device *pdev,
 	sha = SHOST_TO_SAS_HA(shost);
 	hisi_hba = shost_priv(shost);
 	platform_set_drvdata(pdev, sha);
+
+	if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
+	    dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
+		dev_err(dev, "No usable DMA addressing method\n");
+		rc = -EIO;
+		goto err_out_ha;
+	}
+
 	phy_nr = port_nr = hisi_hba->n_phy;
 
 	arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
-- 
1.9.1

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