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Commit 243575bd authored by Yue Ma's avatar Yue Ma
Browse files

cnss2: Bypass SMMU stage-1 by default 



Bypass SMMU stage-1 till it is fully supported by WLAN driver and
device.

Change-Id: I186345c20f9b71171bba6acc8c5eaa689e39b51c
CRs-fixed: 2071634
Signed-off-by: default avatarYue Ma <yuem@codeaurora.org>
parent abb697f2

drivers/net/wireless/cnss2/pci.c

+10 −0
Original line number Diff line number Diff line
@@ -222,6 +222,7 @@ static int cnss_pci_init_smmu(struct cnss_pci_data *pci_priv) 
	struct device *dev;

	struct dma_iommu_mapping *mapping;

	int atomic_ctx = 1;

	int s1_bypass = 1;



	dev = &pci_priv->pci_dev->dev;
@@ -243,6 +244,15 @@ static int cnss_pci_init_smmu(struct cnss_pci_data *pci_priv) 
		goto release_mapping;

	}



	ret = iommu_domain_set_attr(mapping->domain,

				    DOMAIN_ATTR_S1_BYPASS,

				    &s1_bypass);

	if (ret) {

		pr_err("Failed to set SMMU s1_bypass attribute, err = %d\n",

		       ret);

		goto release_mapping;

	}



	ret = arm_iommu_attach_device(dev, mapping);

	if (ret) {

		pr_err("Failed to attach SMMU device, err = %d\n", ret);