diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2024-10-23 04:43:40 +0300 |
|---|---|---|
| committer | Ira Weiny <ira.weiny@intel.com> | 2024-10-26 00:07:03 +0300 |
| commit | 48f62d38a07d464a499fa834638afcfd2b68f852 (patch) | |
| tree | e5a1a49a47ac8681cad034273249fc2e6de8422f /drivers/cxl | |
| parent | 3d6ebf16438de5d712030fefbb4182b46373d677 (diff) | |
| download | linux-48f62d38a07d464a499fa834638afcfd2b68f852.tar.xz | |
cxl/acpi: Ensure ports ready at cxl_acpi_probe() return
In order to ensure root CXL ports are enabled upon cxl_acpi_probe()
when the 'cxl_port' driver is built as a module, arrange for the
module to be pre-loaded or built-in.
The "Fixes:" but no "Cc: stable" on this patch reflects that the issue
is merely by inspection since the bug that triggered the discovery of
this potential problem [1] is fixed by other means. However, a stable
backport should do no harm.
Fixes: 8dd2bc0f8e02 ("cxl/mem: Add the cxl_mem driver")
Link: http://lore.kernel.org/20241004212504.1246-1-gourry@gourry.net [1]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://patch.msgid.link/172964781969.81806.17276352414854540808.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Diffstat (limited to 'drivers/cxl')
| -rw-r--r-- | drivers/cxl/acpi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c index 82b78e331d8e..432b7cfd12a8 100644 --- a/drivers/cxl/acpi.c +++ b/drivers/cxl/acpi.c @@ -924,6 +924,13 @@ static void __exit cxl_acpi_exit(void) /* load before dax_hmem sees 'Soft Reserved' CXL ranges */ subsys_initcall(cxl_acpi_init); + +/* + * Arrange for host-bridge ports to be active synchronous with + * cxl_acpi_probe() exit. + */ +MODULE_SOFTDEP("pre: cxl_port"); + module_exit(cxl_acpi_exit); MODULE_DESCRIPTION("CXL ACPI: Platform Support"); MODULE_LICENSE("GPL v2"); |