diff options
| author | Robert Richter <rrichter@amd.com> | 2026-01-14 17:48:25 +0100 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2026-02-03 10:52:59 -0700 |
| commit | 7be03eae1fdb690dff8f102a7306ca61b55a810c (patch) | |
| tree | f45930b771c601713cd01800e2b936007a21e1aa /drivers | |
| parent | a31af41115b0f7021a86f5439cb8720b93314f91 (diff) | |
cxl/acpi: Prepare use of EFI runtime services
In order to use EFI runtime services, esp. ACPI PRM which uses the
efi_rts_wq workqueue, initialize EFI before CXL ACPI.
There is a subsys_initcall order dependency if driver is builtin:
subsys_initcall(cxl_acpi_init);
subsys_initcall(efisubsys_init);
Prevent the efi_rts_wq workqueue being used by cxl_acpi_init() before
its allocation. Use subsys_initcall_sync(cxl_acpi_init) to always run
efisubsys_init() first.
Reported-by: Gregory Price <gourry@gourry.net>
Tested-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Reviewed-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Reviewed-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Gregory Price <gourry@gourry.net>
Signed-off-by: Robert Richter <rrichter@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>> ---
Link: https://patch.msgid.link/20260114164837.1076338-10-rrichter@amd.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/cxl/acpi.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c index b4bed40ef7c0..a31d0f97f916 100644 --- a/drivers/cxl/acpi.c +++ b/drivers/cxl/acpi.c @@ -1005,8 +1005,12 @@ static void __exit cxl_acpi_exit(void) cxl_bus_drain(); } -/* load before dax_hmem sees 'Soft Reserved' CXL ranges */ -subsys_initcall(cxl_acpi_init); +/* + * Load before dax_hmem sees 'Soft Reserved' CXL ranges. Use + * subsys_initcall_sync() since there is an order dependency with + * subsys_initcall(efisubsys_init), which must run first. + */ +subsys_initcall_sync(cxl_acpi_init); /* * Arrange for host-bridge ports to be active synchronous with |