linux-kernel - [PATCH 3/3] iommu/io-pgtable: Allow building as a module

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Date:   Fri, 18 Dec 2020 00:38:42 -0800
From:   "Isaac J. Manjarres" <isaacm@...eaurora.org>
To:     iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     "Isaac J. Manjarres" <isaacm@...eaurora.org>, will@...nel.org,
        joro@...tes.org, robin.murphy@....com, pdaly@...eaurora.org,
        pratikp@...eaurora.org, kernel-team@...roid.com
Subject: [PATCH 3/3] iommu/io-pgtable: Allow building as a module

Now that all of the required symbols have been exported,
and the io-pgtable code can correctly refer to the
io-pgtable init functions when their source files are built
as modules, allow the io-pgtable code to be built as a module. The
expectation is that the io-pgtable core code, along with
the descriptor format (either or both ARM LPAE and ARMV7S)
can be built as modules.

Signed-off-by: Isaac J. Manjarres <isaacm@...eaurora.org>
---
 drivers/iommu/Kconfig | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 192ef8f..d7de6db 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -27,10 +27,10 @@ menu "Generic IOMMU Pagetable Support"
 
 # Selected by the actual pagetable implementations
 config IOMMU_IO_PGTABLE
-	bool
+	tristate
 
 config IOMMU_IO_PGTABLE_LPAE
-	bool "ARMv7/v8 Long Descriptor Format"
+	tristate "ARMv7/v8 Long Descriptor Format"
 	select IOMMU_IO_PGTABLE
 	depends on ARM || ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64)
 	help
@@ -49,7 +49,7 @@ config IOMMU_IO_PGTABLE_LPAE_SELFTEST
 	  If unsure, say N here.
 
 config IOMMU_IO_PGTABLE_ARMV7S
-	bool "ARMv7/v8 Short Descriptor Format"
+	tristate "ARMv7/v8 Short Descriptor Format"
 	select IOMMU_IO_PGTABLE
 	depends on ARM || ARM64 || COMPILE_TEST
 	help
-- 
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