[tip: x86/sgx] x86/sgx: Fix the return type of sgx_init()

[tip-bot2 for Sami Tolvanen]

The following commit has been merged into the x86/sgx branch of tip:

Commit-ID:     31bf92881714fe9962d43d097b5114a9b4ad0a12
Gitweb:        https://git.kernel.org/tip/31bf92881714fe9962d43d097b5114a9b4ad0a12
Author:        Sami Tolvanen <samitolvanen@xxxxxxxxxx>
AuthorDate:    Wed, 13 Jan 2021 15:23:11 -08:00
Committer:     Borislav Petkov <bp@xxxxxxx>
CommitterDate: Thu, 21 Jan 2021 14:04:06 +01:00

x86/sgx: Fix the return type of sgx_init()

device_initcall() expects a function of type initcall_t, which returns
an integer. Change the signature of sgx_init() to match.

Fixes: e7e0545299d8c ("x86/sgx: Initialize metadata for Enclave Page Cache (EPC) sections")
Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Reviewed-by: Darren Kenny <darren.kenny@xxxxxxxxxx>
Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/20210113232311.277302-1-samitolvanen@xxxxxxxxxx
---
 arch/x86/kernel/cpu/sgx/main.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c
index c519fc5..8df81a3 100644
--- a/arch/x86/kernel/cpu/sgx/main.c
+++ b/arch/x86/kernel/cpu/sgx/main.c
@@ -700,25 +700,27 @@ static bool __init sgx_page_cache_init(void)
 	return true;
 }
 
-static void __init sgx_init(void)
+static int __init sgx_init(void)
 {
 	int ret;
 	int i;
 
 	if (!cpu_feature_enabled(X86_FEATURE_SGX))
-		return;
+		return -ENODEV;
 
 	if (!sgx_page_cache_init())
-		return;
+		return -ENOMEM;
 
-	if (!sgx_page_reclaimer_init())
+	if (!sgx_page_reclaimer_init()) {
+		ret = -ENOMEM;
 		goto err_page_cache;
+	}
 
 	ret = sgx_drv_init();
 	if (ret)
 		goto err_kthread;
 
-	return;
+	return 0;
 
 err_kthread:
 	kthread_stop(ksgxd_tsk);
@@ -728,6 +730,8 @@ err_page_cache:
 		vfree(sgx_epc_sections[i].pages);
 		memunmap(sgx_epc_sections[i].virt_addr);
 	}
+
+	return ret;
 }
 
 device_initcall(sgx_init);