[PATCH v13 8/8] coco: guest: arm64: Remove dummy CCA platform device

[Aneesh Kumar K.V (Arm)]

The SMCCC firmware driver now creates the arm_smccc bus and instantiates
the CCA RSI device once the RSI ABI is discovered. The arm64-specific
arm-cca-dev platform device stub is therefore no longer needed.

Userspace now has /sys/firmware/cca/realm_guest as a dedicated CCA Realm
guest indicator. Remove the dummy arm-cca-dev registration.

Link: https://lore.kernel.org/all/4a7d84b2-2ec4-4773-a2d5-7b63d5c683cf@arm.com
Reviewed-by: Jonathan Cameron <jonathan.cameron at oss.qualcomm.com>
Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>
Reviewed-by: Jason Gunthorpe <jgg at nvidia.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will at kernel.org>
Cc: Mark Rutland <mark.rutland at arm.com>
Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar at kernel.org>
---
 drivers/firmware/arm_rmm/rsi.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/firmware/arm_rmm/rsi.c b/drivers/firmware/arm_rmm/rsi.c
index 29eeb90ffc6b..0fcc4e33bd92 100644
--- a/drivers/firmware/arm_rmm/rsi.c
+++ b/drivers/firmware/arm_rmm/rsi.c
@@ -7,7 +7,6 @@
 #include <linux/memblock.h>
 #include <linux/psci.h>
 #include <linux/swiotlb.h>
-#include <linux/platform_device.h>
 #include <linux/arm-rsi-cmds.h>
 #include <linux/kobject.h>
 #include <linux/sysfs.h>
@@ -216,18 +215,3 @@ static int __init realm_sysfs_init(void)
 	return ret;
 }
 device_initcall(realm_sysfs_init);
-
-static struct platform_device rsi_dev = {
-	.name = "arm-cca-dev",
-	.id = PLATFORM_DEVID_NONE
-};
-
-static int __init arm64_create_dummy_rsi_dev(void)
-{
-	if (is_realm_world() &&
-	    platform_device_register(&rsi_dev))
-		pr_err("failed to register rsi platform device\n");
-	return 0;
-}
-
-arch_initcall(arm64_create_dummy_rsi_dev)
-- 
2.43.0