diff options
Diffstat (limited to 'drivers/gpu/drm/imagination/pvr_vm.c')
| -rw-r--r-- | drivers/gpu/drm/imagination/pvr_vm.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/drivers/gpu/drm/imagination/pvr_vm.c b/drivers/gpu/drm/imagination/pvr_vm.c index 97c0f772ed65..363f885a7098 100644 --- a/drivers/gpu/drm/imagination/pvr_vm.c +++ b/drivers/gpu/drm/imagination/pvr_vm.c @@ -14,6 +14,7 @@ #include <drm/drm_gem.h> #include <drm/drm_gpuvm.h> +#include <linux/bug.h> #include <linux/container_of.h> #include <linux/err.h> #include <linux/errno.h> @@ -597,12 +598,26 @@ err_free: } /** - * pvr_vm_context_release() - Teardown a VM context. - * @ref_count: Pointer to reference counter of the VM context. + * pvr_vm_unmap_all() - Unmap all mappings associated with a VM context. + * @vm_ctx: Target VM context. * * This function ensures that no mappings are left dangling by unmapping them * all in order of ascending device-virtual address. */ +void +pvr_vm_unmap_all(struct pvr_vm_context *vm_ctx) +{ + WARN_ON(pvr_vm_unmap(vm_ctx, vm_ctx->gpuvm_mgr.mm_start, + vm_ctx->gpuvm_mgr.mm_range)); +} + +/** + * pvr_vm_context_release() - Teardown a VM context. + * @ref_count: Pointer to reference counter of the VM context. + * + * This function also ensures that no mappings are left dangling by calling + * pvr_vm_unmap_all. + */ static void pvr_vm_context_release(struct kref *ref_count) { @@ -612,8 +627,7 @@ pvr_vm_context_release(struct kref *ref_count) if (vm_ctx->fw_mem_ctx_obj) pvr_fw_object_destroy(vm_ctx->fw_mem_ctx_obj); - WARN_ON(pvr_vm_unmap(vm_ctx, vm_ctx->gpuvm_mgr.mm_start, - vm_ctx->gpuvm_mgr.mm_range)); + pvr_vm_unmap_all(vm_ctx); pvr_mmu_context_destroy(vm_ctx->mmu_ctx); drm_gem_private_object_fini(&vm_ctx->dummy_gem); @@ -640,9 +654,7 @@ pvr_vm_context_lookup(struct pvr_file *pvr_file, u32 handle) xa_lock(&pvr_file->vm_ctx_handles); vm_ctx = xa_load(&pvr_file->vm_ctx_handles, handle); - if (vm_ctx) - kref_get(&vm_ctx->ref_count); - + pvr_vm_context_get(vm_ctx); xa_unlock(&pvr_file->vm_ctx_handles); return vm_ctx; |