linux-kernel - [PATCH 1/2] vfio/mdev: turn mdev_init into a subsys

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Date:   Mon, 26 Jul 2021 16:35:23 +0200
From:   Christoph Hellwig <hch@....de>
To:     Kirti Wankhede <kwankhede@...dia.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>
Cc:     Cornelia Huck <cohuck@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] vfio/mdev: turn mdev_init into a subsys_initcall

Without this setups with buіlt-in mdev and mdev-drivers fail to
register like this:

[1.903149] Driver 'intel_vgpu_mdev' was unable to register with bus_type 'mdev' because the bus was not initialized.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/vfio/mdev/mdev_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c
index e4581ec093a6..b16606ebafa1 100644
--- a/drivers/vfio/mdev/mdev_core.c
+++ b/drivers/vfio/mdev/mdev_core.c
@@ -398,7 +398,7 @@ static void __exit mdev_exit(void)
 	mdev_bus_unregister();
 }
 
-module_init(mdev_init)
+subsys_initcall(mdev_init)
 module_exit(mdev_exit)
 
 MODULE_VERSION(DRIVER_VERSION);
-- 
2.30.2