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From: Will Deacon <will@kernel.org>
To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Cc: "Isaac J. Manjarres" <isaacm@codeaurora.org>,
	Jean-Philippe Brucker <jean-philippe@linaro.org>,
	Saravana Kannan <saravanak@google.com>,
	Robin Murphy <robin.murphy@arm.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Will Deacon <will@kernel.org>
Subject: [PATCH v2 7/9] iommu/arm-smmu-v3: Allow building as a module
Date: Fri,  8 Nov 2019 15:16:06 +0000	[thread overview]
Message-ID: <20191108151608.20932-8-will@kernel.org> (raw)
In-Reply-To: <20191108151608.20932-1-will@kernel.org>

By removing the redundant call to 'pci_request_acs()' we can allow the
ARM SMMUv3 driver to be built as a module.

Signed-off-by: Will Deacon <will@kernel.org>
---
 drivers/iommu/Kconfig       | 2 +-
 drivers/iommu/arm-smmu-v3.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index e3842eabcfdd..7583d47fc4d5 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -388,7 +388,7 @@ config ARM_SMMU_DISABLE_BYPASS_BY_DEFAULT
 	  config.
 
 config ARM_SMMU_V3
-	bool "ARM Ltd. System MMU Version 3 (SMMUv3) Support"
+	tristate "ARM Ltd. System MMU Version 3 (SMMUv3) Support"
 	depends on ARM64
 	select IOMMU_API
 	select IOMMU_IO_PGTABLE_LPAE
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 2ad8e2ca0583..d54ceb80c28d 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -2733,6 +2733,7 @@ static struct iommu_ops arm_smmu_ops = {
 	.get_resv_regions	= arm_smmu_get_resv_regions,
 	.put_resv_regions	= arm_smmu_put_resv_regions,
 	.pgsize_bitmap		= -1UL, /* Restricted during device attach */
+	.owner			= THIS_MODULE,
 };
 
 /* Probing and initialisation functions */
@@ -3657,7 +3658,6 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
 
 #ifdef CONFIG_PCI
 	if (pci_bus_type.iommu_ops != &arm_smmu_ops) {
-		pci_request_acs();
 		ret = bus_set_iommu(&pci_bus_type, &arm_smmu_ops);
 		if (ret)
 			return ret;
-- 
2.24.0.rc1.363.gb1bccd3e3d-goog

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WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org>
To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Cc: Will Deacon <will@kernel.org>,
	Jean-Philippe Brucker <jean-philippe@linaro.org>,
	Jordan Crouse <jcrouse@codeaurora.org>,
	John Garry <john.garry@huawei.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Saravana Kannan <saravanak@google.com>,
	"Isaac J. Manjarres" <isaacm@codeaurora.org>,
	Robin Murphy <robin.murphy@arm.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Joerg Roedel <joro@8bytes.org>
Subject: [PATCH v2 7/9] iommu/arm-smmu-v3: Allow building as a module
Date: Fri,  8 Nov 2019 15:16:06 +0000	[thread overview]
Message-ID: <20191108151608.20932-8-will@kernel.org> (raw)
In-Reply-To: <20191108151608.20932-1-will@kernel.org>

By removing the redundant call to 'pci_request_acs()' we can allow the
ARM SMMUv3 driver to be built as a module.

Signed-off-by: Will Deacon <will@kernel.org>
---
 drivers/iommu/Kconfig       | 2 +-
 drivers/iommu/arm-smmu-v3.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index e3842eabcfdd..7583d47fc4d5 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -388,7 +388,7 @@ config ARM_SMMU_DISABLE_BYPASS_BY_DEFAULT
 	  config.
 
 config ARM_SMMU_V3
-	bool "ARM Ltd. System MMU Version 3 (SMMUv3) Support"
+	tristate "ARM Ltd. System MMU Version 3 (SMMUv3) Support"
 	depends on ARM64
 	select IOMMU_API
 	select IOMMU_IO_PGTABLE_LPAE
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 2ad8e2ca0583..d54ceb80c28d 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -2733,6 +2733,7 @@ static struct iommu_ops arm_smmu_ops = {
 	.get_resv_regions	= arm_smmu_get_resv_regions,
 	.put_resv_regions	= arm_smmu_put_resv_regions,
 	.pgsize_bitmap		= -1UL, /* Restricted during device attach */
+	.owner			= THIS_MODULE,
 };
 
 /* Probing and initialisation functions */
@@ -3657,7 +3658,6 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
 
 #ifdef CONFIG_PCI
 	if (pci_bus_type.iommu_ops != &arm_smmu_ops) {
-		pci_request_acs();
 		ret = bus_set_iommu(&pci_bus_type, &arm_smmu_ops);
 		if (ret)
 			return ret;
-- 
2.24.0.rc1.363.gb1bccd3e3d-goog


  parent reply	other threads:[~2019-11-08 15:16 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-08 15:15 [PATCH v2 0/9] iommu: Permit modular builds of ARM SMMU[v3] drivers Will Deacon
2019-11-08 15:15 ` Will Deacon
2019-11-08 15:16 ` [PATCH v2 1/9] drivers/iommu: Export core IOMMU API symbols to permit modular drivers Will Deacon
2019-11-08 15:16   ` Will Deacon
2019-11-08 15:16 ` [PATCH v2 2/9] iommu/of: Request ACS from the PCI core when configuring IOMMU linkage Will Deacon
2019-11-08 15:16   ` Will Deacon
2019-11-08 15:16 ` [PATCH v2 3/9] PCI: Export pci_ats_disabled() as a GPL symbol to modules Will Deacon
2019-11-08 15:16   ` Will Deacon
2019-11-08 15:16 ` [PATCH v2 4/9] drivers/iommu: Take a ref to the IOMMU driver prior to ->add_device() Will Deacon
2019-11-08 15:16   ` Will Deacon
2019-11-08 15:16 ` [PATCH v2 5/9] iommu/of: Take a ref to the IOMMU driver during ->of_xlate() Will Deacon
2019-11-08 15:16   ` Will Deacon
2019-11-08 15:16 ` [PATCH v2 6/9] Revert "iommu/arm-smmu: Make arm-smmu-v3 explicitly non-modular" Will Deacon
2019-11-08 15:16   ` Will Deacon
2019-11-08 16:17   ` John Garry
2019-11-08 16:17     ` John Garry
2019-11-08 16:44     ` John Garry
2019-11-08 16:44       ` John Garry
2019-11-08 16:47       ` Will Deacon
2019-11-08 16:47         ` Will Deacon
2019-11-08 17:25         ` John Garry
2019-11-08 17:25           ` John Garry
2019-11-08 17:32           ` Will Deacon
2019-11-08 17:32             ` Will Deacon
2019-11-08 17:48             ` Will Deacon
2019-11-08 17:48               ` Will Deacon
2019-11-08 18:00               ` John Garry
2019-11-08 18:00                 ` John Garry
2019-11-08 17:49             ` John Garry
2019-11-08 17:49               ` John Garry
2019-11-08 15:16 ` Will Deacon [this message]
2019-11-08 15:16   ` [PATCH v2 7/9] iommu/arm-smmu-v3: Allow building as a module Will Deacon
2019-11-08 15:16 ` [PATCH v2 8/9] Revert "iommu/arm-smmu: Make arm-smmu explicitly non-modular" Will Deacon
2019-11-08 15:16   ` Will Deacon
2019-11-08 15:16 ` [PATCH v2 9/9] iommu/arm-smmu: Allow building as a module Will Deacon
2019-11-08 15:16   ` Will Deacon

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