thunderbolt: Initialize after IOMMUs

westeri · gregkh · commit eafa717bc145 · 2018-10-02T10:51:16.000-07:00
If IOMMU is enabled and Thunderbolt driver is built into the kernel
image, it will be probed before IOMMUs are attached to the PCI bus.
Because of this DMA mappings the driver does will not go through IOMMU
and start failing right after IOMMUs are enabled.

For this reason move the Thunderbolt driver initialization happen at
rootfs level.

Signed-off-by: Mika Westerberg &lt;mika.westerberg@linux.intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c
@@ -1191,5 +1191,5 @@ static void __exit nhi_unload(void)
 	tb_domain_exit();
 }
 
-fs_initcall(nhi_init);
+rootfs_initcall(nhi_init);
 module_exit(nhi_unload);

Original file line number	Diff line number	Diff line change
`@@ -1191,5 +1191,5 @@ static void __exit nhi_unload(void)`
`1191`	`1191`	`tb_domain_exit();`
`1192`	`1192`	`}`
`1193`	`1193`
`1194`		`-fs_initcall(nhi_init);`
	`1194`	`+rootfs_initcall(nhi_init);`
`1195`	`1195`	`module_exit(nhi_unload);`