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Commit 97e9c6f5 authored by Yue Ma's avatar Yue Ma Committed by Matt Wagantall
Browse files

cnss: Set new attribute when attach to SMMU driver 



Set DOMAIN_ATTR_ATOMIC attribute when attach to SMMU driver so that
it can handle atomic DMA map/unmap operations for WLAN.

Change-Id: Id31faf5aec10d0e08430df14910c0220e80ff57e
Signed-off-by: default avatarYue Ma <yuem@codeaurora.org>
parent d44831bc

drivers/net/wireless/cnss/cnss.c

+12 −1
Original line number Diff line number Diff line
@@ -1290,6 +1290,7 @@ static int cnss_smmu_init(struct device *dev) 
	struct dma_iommu_mapping *mapping;

	int order = 0;

	int disable_htw = 1;

	int atomic_ctx = 1;

	int ret;



	mapping = arm_iommu_create_mapping(&platform_bus_type,
@@ -1306,7 +1307,17 @@ static int cnss_smmu_init(struct device *dev) 
			      DOMAIN_ATTR_COHERENT_HTW_DISABLE,

			      &disable_htw);

	if (ret) {

		pr_err("%s: set attributes failed, err = %d\n", __func__, ret);

		pr_err("%s: set disable_htw attribute failed, err = %d\n",

			__func__, ret);

		goto set_attr_fail;

	}



	ret = iommu_domain_set_attr(mapping->domain,

				    DOMAIN_ATTR_ATOMIC,

				    &atomic_ctx);

	if (ret) {

		pr_err("%s: set atomic_ctx attribute failed, err = %d\n",

			__func__, ret);

		goto set_attr_fail;

	}