diff options
Diffstat (limited to 'drivers/iommu/iommu-debug.c')
| -rw-r--r-- | drivers/iommu/iommu-debug.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/iommu/iommu-debug.c b/drivers/iommu/iommu-debug.c index dece6cbb9441..6772868d1c9b 100644 --- a/drivers/iommu/iommu-debug.c +++ b/drivers/iommu/iommu-debug.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2015, The Linux Foundation. All rights reserved. + * Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -1143,6 +1143,30 @@ static inline int iommu_debug_init_tests(void) { return 0; } static inline void iommu_debug_destroy_tests(void) { } #endif +/* + * This isn't really a "driver", we just need something in the device tree + * so that our tests can run without any client drivers, and our tests rely + * on parsing the device tree for nodes with the `iommus' property. + */ +static int iommu_debug_pass(struct platform_device *pdev) +{ + return 0; +} + +static const struct of_device_id iommu_debug_of_match[] = { + { .compatible = "iommu-debug-test" }, + { }, +}; + +static struct platform_driver iommu_debug_driver = { + .probe = iommu_debug_pass, + .remove = iommu_debug_pass, + .driver = { + .name = "iommu-debug", + .of_match_table = iommu_debug_of_match, + }, +}; + static int iommu_debug_init(void) { if (iommu_debug_init_tracking()) @@ -1151,11 +1175,12 @@ static int iommu_debug_init(void) if (iommu_debug_init_tests()) return -ENODEV; - return 0; + return platform_driver_register(&iommu_debug_driver); } static void iommu_debug_exit(void) { + platform_driver_unregister(&iommu_debug_driver); iommu_debug_destroy_tracking(); iommu_debug_destroy_tests(); } |