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path: root/drivers/iommu/exynos-iommu.c
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2017-03-22iommu/exynos: Workaround FLPD cache flush issues for SYSMMU v5Marek Szyprowski1-1/+4
For some unknown reasons, in some cases, FLPD cache invalidation doesn't work properly with SYSMMU v5 controllers found in Exynos5433 SoCs. This can be observed by a firmware crash during initialization phase of MFC video decoder available in the mentioned SoCs when IOMMU support is enabled. To workaround this issue perform a full TLB/FLPD invalidation in case of replacing any first level page descriptors in case of SYSMMU v5. Fixes: 740a01eee9ada ("iommu/exynos: Add support for v5 SYSMMU") CC: stable@vger.kernel.org # v4.10+ Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-03-22iommu/exynos: Block SYSMMU while invalidating FLPD cacheMarek Szyprowski1-1/+4
Documentation specifies that SYSMMU should be in blocked state while performing TLB/FLPD cache invalidation, so add needed calls to sysmmu_block/unblock. Fixes: 66a7ed84b345d ("iommu/exynos: Apply workaround of caching fault page table entries") CC: stable@vger.kernel.org # v4.10+ Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-02-10Merge branches 'iommu/fixes', 'arm/exynos', 'arm/renesas', 'arm/smmu', ↵Joerg Roedel1-8/+47
'arm/mediatek', 'arm/core', 'x86/vt-d' and 'core' into next
2017-02-10iommu: Remove iommu_register_instance interfaceJoerg Roedel1-2/+0
And also move its remaining functionality to iommu_device_register() and 'struct iommu_device'. Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: devicetree@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-02-10iommu/exynos: Make use of iommu_device_register interfaceJoerg Roedel1-0/+14
Register Exynos IOMMUs to the IOMMU core and make them visible in sysfs. This patch does not add the links between IOMMUs and translated devices yet. Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-01-26iommu: Drop the of_iommu_{set/get}_ops() interfaceLorenzo Pieralisi1-1/+1
With the introduction of the new iommu_{register/get}_instance() interface in commit e4f10ffe4c9b ("iommu: Make of_iommu_set/get_ops() DT agnostic") (based on struct fwnode_handle as look-up token, so firmware agnostic) to register IOMMU instances with the core IOMMU layer there is no reason to keep the old OF based interface around any longer. Convert all the IOMMU drivers (and OF IOMMU core code) that rely on the of_iommu_{set/get}_ops() to the new kernel interface to register/retrieve IOMMU instances and remove the of_iommu_{set/get}_ops() remaining glue code in order to complete the interface rework. Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Sricharan R <sricharan@codeaurora.org> Tested-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-01-10iommu/exynos: Properly release device from the default domain in ->removeMarek Szyprowski1-0/+12
IOMMU core doesn't detach device from the default domain before calling ->iommu_remove_device, so check that and do the proper cleanup or warn if device is still attached to non-default domain. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-01-10iommu/exynos: Ensure that SYSMMU is added only once to its master deviceMarek Szyprowski1-1/+5
This patch prepares Exynos IOMMU driver for deferred probing support. Once it gets added, of_xlate() callback might be called more than once for the same SYSMMU controller and master device (for example it happens when masters device driver fails with EPROBE_DEFER). This patch adds a check, which ensures that SYSMMU controller is added to its master device (owner) only once. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-01-10iommu/exynos: Fix warnings from DMA-debugMarek Szyprowski1-1/+11
Add a simple checks for dma_map_single() return value to make DMA-debug checker happly. Exynos IOMMU on Samsung Exynos SoCs always use device, which has linear DMA mapping ops (dma address is equal to physical memory address), so no failures are returned from dma_map_single(). Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-01-10iommu/exynos: Improve page fault debug messageMarek Szyprowski1-4/+5
Add master device name to default IOMMU fault message to make easier to find which device triggered the fault. While at it, move printing some information (like page table base and first level entry addresses) to dev_dbg(), because those are typically not very useful for typical device driver user/developer not equipped with hardware debugging tools. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-11-14iommu/exynos: Use device dependency links to control runtime pmMarek Szyprowski1-10/+10
This patch uses recently introduced device dependency links to track the runtime pm state of the master's device. The goal is to let SYSMMU controller device's runtime PM to follow the runtime PM state of the respective master's device. This way each SYSMMU controller is active only when its master's device is active and can properly restore or save its state instead on runtime PM transition of master's device. This approach replaces old behavior, when SYSMMU controller was set to runtime active once after attaching to the master device. In the new approach SYSMMU controllers no longer prevents respective power domains to be turned off when master's device is not being used. This patch reduces total power consumption of idle system, because most power domains can be finally turned off. For example, on Exynos 4412 based Odroid U3 this patch reduces power consuption from 136mA to 130mA at 5V (by 4.4%). The dependency links also enforce proper order of suspending/restoring devices during system sleep transition, so there is no more need to use LATE_SYSTEM_SLEEP_PM_OPS-based workaround for ensuring that SYSMMUs are suspended after their master devices. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-11-14iommu/exynos: Add runtime pm supportMarek Szyprowski1-9/+36
This patch adds runtime pm implementation, which is based on previous suspend/resume code. SYSMMU controller is now being enabled/disabled mainly from the runtime pm callbacks. System sleep callbacks relies on generic pm_runtime_force_suspend/pm_runtime_force_resume helpers. To ensure internal state consistency, additional lock for runtime pm transitions was introduced. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-11-14iommu/exynos: Rework and fix internal lockingMarek Szyprowski1-8/+19
This patch reworks locking in the exynos_iommu_attach/detach_device functions to ensure that all entries of the sysmmu_drvdata and exynos_iommu_owner structure are updated under the respective spinlocks, while runtime pm functions are called without any spinlocks held. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-11-14iommu/exynos: Set master device once on bootMarek Szyprowski1-7/+9
To avoid possible races, set master device pointer in each SYSMMU controller once on boot. Suspend/resume callbacks now properly relies on the configured iommu domain to enable or disable SYSMMU controller. While changing the code, also update the sleep debug messages and make them conditional. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-11-14iommu/exynos: Simplify internal enable/disable functionsMarek Szyprowski1-75/+29
Remove remaining leftovers of the ref-count related code in the __sysmmu_enable/disable functions inline __sysmmu_enable/disable_nocount to them. Suspend/resume callbacks now checks if master device is set for given SYSMMU controller instead of relying on the activation count. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-11-14iommu/exynos: Remove dead codeMarek Szyprowski1-48/+17
__sysmmu_enable/disable functions were designed to do ref-count based operations, but current code always calls them only once, so the code for checking the conditions and invalid conditions can be simply removed without any influence to the driver operation. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-11-14iommu/exynos: Remove excessive, useless debugMarek Szyprowski1-3/+0
Remove excessive, useless debug about skipping TLB invalidation, which is a normal situation when more aggressive power management is enabled. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-11-14iommu/exynos: Add support for page access protection bitsMarek Szyprowski1-12/+51
This patch add support for page access protection bits. Till now this feature was disabled and Exynos SYSMMU always mapped pages as read/write. Now page access bits are set according to the protection bits provided in iommu_map(), so Exynos SYSMMU is able to detect incorrect access to mapped pages. Exynos SYSMMU earlier than v5 doesn't support write-only mappings, so pages with such protection bits are mapped as read/write. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-08-09iommu/exynos: Fix error handling for of_platform_device_createAmitoj Kaur Chawla1-2/+2
of_platform_device_create returns NULL on error so an IS_ERR test is incorrect here and a NULL check is required. The Coccinelle semantic patch used to make this change is as follows: @@ expression e; @@ e = of_platform_device_create(...); if( - IS_ERR(e) + !e ) { <+... return - PTR_ERR(e) + -ENODEV ; ...+> } Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-21iommu/exynos: update to use iommu big-endianBen Dooks1-1/+5
Add initial support for big endian by always writing the pte in le32. Note, revisit if hardware capable of doing big endian fetches. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-15iommu/exynos: Prepare for deferred probe supportMarek Szyprowski1-1/+4
Register iommu_ops at the end of successful probe instead of doing that unconditionally. This makes Exynos IOMMU driver ready for deferred probe caused by not-yet-available clocks. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-15iommu/exynos: Prepare clocks when needed, not in driver probeMarek Szyprowski1-28/+26
Make clock preparation together with clk_enable(). This way inactive SYSMMU controllers will not keep clocks prepared all the time. This change allows more fine graded power management in the future. All the code assumes that clock management doesn't fail, so guard clock_prepare_enable() it with BUG_ON(). Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-15iommu/exynos: Fix master clock management for inactive SYSMMUMarek Szyprowski1-5/+4
If SYSMMU controller is not active, there is no point in enabling master's clock just for doing the the of internal state. This patch moves enabling that clock to the block which actually does the register access. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-15iommu/exynos: Return proper errors from getting clocksMarek Szyprowski1-32/+24
This patch reworks driver probe code to propagate error codes from clk_get() operation. This will allow to properly handle deferred probe in the future. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-06-15iommu/exynos: Suppress unbinding to prevent system failureMarek Szyprowski1-0/+1
Removal of IOMMU driver cannot be done reliably, so Exynos IOMMU driver doesn't support this operation. It is essential for system operation, so it makes sense to prevent unbinding by disabling bind/unbind sysfs feature for SYSMMU controller driver to avoid kernel ops or trashing memory caused by such operation. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> CC: stable@vger.kernel.org # v4.2+ Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-29iommu/exynos: Use proper readl/writel register interfaceMarek Szyprowski1-19/+19
Drivers should use generic readl/writel calls to access HW registers, so replace all __raw_readl/writel with generic version. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-29iommu/exynos: Pointers are nto physical addressesArnd Bergmann1-1/+1
The exynos iommu driver changed an incorrect cast from pointer to 'unsigned int' to an equally incorrect cast to a 'phys_addr_t', which results in an obvious compile-time error when phys_addr_t is wider than pointers are: drivers/iommu/exynos-iommu.c: In function 'alloc_lv2entry': drivers/iommu/exynos-iommu.c:918:32: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] The code does not actually want the physical address (which would involve using virt_to_phys()), but just checks the alignment, so we can change it to use a cast to uintptr_t instead. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 740a01eee9ad ("iommu/exynos: Add support for v5 SYSMMU") Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Support multiple attach_device callsMarek Szyprowski1-32/+40
IOMMU core calls attach_device callback without detaching device from the previous domain. This patch adds support for such unballanced calls. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Add support for v5 SYSMMUMarek Szyprowski1-48/+139
This patch adds support for v5 of SYSMMU controller, found in Samsung Exynos 5433 SoCs. The main difference of v5 is support for 36-bit physical address space and some changes in register layout and core clocks hanging. This patch also adds support for ARM64 architecture, which is used by Exynos 5433 SoCs. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Add support for SYSMMU controller with bogus version regMarek Szyprowski1-1/+23
SYSMMU on some SoCs reports bogus values in VERSION register. Force hardware version to 1.0 for such controllers. This patch also moves reading version register to driver's probe() function. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Unify code for fldp cache invalidationMarek Szyprowski1-9/+4
This patch simplifies the code for handling of flpdcache invalidation. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Refactor init config codeMarek Szyprowski1-16/+9
This patch rewrites sysmmu_init_config function to make it easier to read and understand. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Refactor fault handling codeMarek Szyprowski1-68/+41
This patch provides a new implementation for page fault handing code. The new implementation is ready for future extensions. No functional changes have been made. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Refactor code (no direct register access)Marek Szyprowski1-21/+19
This patch changes some internal functions to have access to the state of sysmmu device instead of having only it's registers. This will make the code ready for future extensions. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Simplify master clock operationsMarek Szyprowski1-20/+12
All clock API function can be called on NULL clock, so simplify code avoid checking of master clock presence. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Remove ARM-specific cache flush interfaceMarek Szyprowski1-25/+49
This patch replaces custom ARM-specific code for performing CPU cache flush operations with generic code based on DMA-mapping. Domain managing code is independent of particular SYSMMU device, so the first registered SYSMMU device is used for DMA-mapping calls. This simplification works fine because all SYSMMU controllers are in the same address space (where DMA address equals physical address) and the DMA-mapping calls are done mainly to flush CPU cache to make changes visible to SYSMMU controllers. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Add support for IOMMU_DOMAIN_DMA domain typeMarek Szyprowski1-4/+15
This patch adds support for DMA domain type. Such domain have DMA cookie prepared and can be used by generic DMA-IOMMU glue layer. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-02-25iommu/exynos: Rework iommu group initializationMarek Szyprowski1-11/+16
This patch replaces custom code in add_device implementation with iommu_group_get_for_dev() call and provides the needed callback. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Add callback for initializing devices from device treeMarek Szyprowski1-0/+28
This patch adds implementation of of_xlate callback, which prepares masters device for attaching to IOMMU. This callback is called during creating devices from device tree. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Init from dt-specific callback instead of initcallMarek Szyprowski1-9/+28
This patch introduces IOMMU_OF_DECLARE-based initialization to the driver, which replaces subsys_initcall-based procedure. exynos_iommu_of_setup ensures that each sysmmu controller is probed before its master device. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Add system suspend/resume supportMarek Szyprowski1-0/+31
When system goes into suspend state, iommu should save it's state and restore after system resume. This is handled by 'late' pm ops to ensure that sysmmu will be suspended after its master devices and restored before them. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Add support for runtime_pmMarek Szyprowski1-0/+2
This patch fixes support for runtime power management for SYSMMU controllers, so they are enabled when master device is attached. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Add support for binding more than one sysmmu to master deviceMarek Szyprowski1-6/+5
This patch adds support for assigning more than one SYSMMU controller to the master device. This has been achieved simply by chaning the struct device pointer in struct exynos_iommu_owner into the list of struct sysmmu_drvdata of all controllers assigned to the given master device. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Add/remove callbacks should fail if no iommu is availableMarek Szyprowski1-0/+6
Return fail if given master device passed to add_device/remove_device callbacks doesn't has associated any sysmmu controller. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Document internal structuresMarek Szyprowski1-18/+35
Add a few words of comment to all internal structures used by the driver. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Remove excessive includes and sort others alphabeticallyMarek Szyprowski1-9/+5
Removed following unused includes: <linux/mm.h>, <linux/errno.h>, <linux/memblock.h> and <linux/export.h>. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Use struct exynos_iommu_domain in internal structuresMarek Szyprowski1-5/+5
Replace all remaining usage of struct iommu_domain with struct exynos_iommu_domain in all internal structures and functions. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Rename variables to reflect their purposeMarek Szyprowski1-93/+94
This patch renames some variables to make the code easier to understand. 'domain' is replaced by 'iommu_domain' (more generic entity) and really meaningless 'priv' by 'domain' to reflect its purpose. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Refactor function parameters to simplify codeMarek Szyprowski1-86/+48
This patch simplifies the code by: - refactoring function parameters from struct device pointer to direct pointer to struct sysmmu drvdata - moving list_head enteries from struct exynos_iommu_owner directly to struct sysmmu_drvdata After above refactoring some functions were never used, so remove also them completely. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2015-05-29iommu/exynos: Remove useless members from exynos_iommu_owner structureMarek Szyprowski1-19/+2
This patch removes useless spinlocks and other unused members from struct exynos_iommu_owner. There is no point is protecting this structure by spinlock because content of this structure doesn't change and other structures have their own spinlocks. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Joerg Roedel <jroedel@suse.de>
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