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vfio: Replace module request with softdep 

Rather than doing a module request from within the init function, add
a soft dependency on the available IOMMU backend drivers.  This makes
the dependency visible to userspace when picking modules for the
ram disk.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alex Williamson 2017-02-08 13:13:26 -07:00
parent f790eb57e6
commit 0ca582fd04
1 changed files with 1 additions and 8 deletions
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9
drivers/vfio/vfio.c
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@ -2250,14 +2250,6 @@ static int __init vfio_init(void)
pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
/*
* Attempt to load known iommu-drivers. This gives us a working
* environment without the user needing to explicitly load iommu
* drivers.
*/
request_module_nowait("vfio_iommu_type1");
request_module_nowait("vfio_iommu_spapr_tce");
#ifdef CONFIG_VFIO_NOIOMMU #ifdef CONFIG_VFIO_NOIOMMU
vfio_register_iommu_driver(&vfio_noiommu_ops); vfio_register_iommu_driver(&vfio_noiommu_ops);
#endif #endif
@ -2297,3 +2289,4 @@ MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC); MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_ALIAS_MISCDEV(VFIO_MINOR); MODULE_ALIAS_MISCDEV(VFIO_MINOR);
MODULE_ALIAS("devname:vfio/vfio"); MODULE_ALIAS("devname:vfio/vfio");
MODULE_SOFTDEP("post: vfio_iommu_type1 vfio_iommu_spapr_tce");