[focal:linux-azure, eoan:linux-azure, bionic:linux-azure-4.15][PATCH] UBUNTU: SAUCE: ubuntu/sgx: Add module alias for ACPI device INT0E0C

[Marcelo Henrique Cerri]

BugLink: https://bugs.launchpad.net/bugs/1881338

Based on version LD_1.22 and:

https://github.com/intel/SGXDataCenterAttestationPrimitives/pull/115/commits/8390589ed10ac2ec431d6d607a5ac71d10bc9c72

The INT0E0C device denotes SGX support in the DSDT ACPI table. Add
this as an alias to the SGX driver. This allows the module to be
auto-probed when the module is build with the kernel (rather than
DKMS) and the entry is present in the machine's DSDT.

Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri at canonical.com>
---
 ubuntu/sgx/driver.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ubuntu/sgx/driver.c b/ubuntu/sgx/driver.c
index 379eb636fd8b..bcca5a676eca 100644
--- a/ubuntu/sgx/driver.c
+++ b/ubuntu/sgx/driver.c
@@ -221,3 +221,11 @@ int __exit sgx_drv_exit(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_ACPI
+static struct acpi_device_id sgx_device_ids[] = {
+	{"INT0E0C", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, sgx_device_ids);
+#endif
-- 
2.25.1