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From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: linux-sgx@vger.kernel.org
Subject: [PATCH for_v21] x86/sgx: Provide stub for sgx_drv_init when driver is disabled
Date: Thu, 11 Jul 2019 21:06:39 -0700	[thread overview]
Message-ID: <20190712040639.18037-1-sean.j.christopherson@intel.com> (raw)

The core SGX code expects sgx_drv_init() to always be available, provide
a stub to handle CONFIG_INTEL_SGX_DRIVER=n.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
 arch/x86/kernel/cpu/sgx/driver/driver.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/x86/kernel/cpu/sgx/driver/driver.h b/arch/x86/kernel/cpu/sgx/driver/driver.h
index c71570a9cd01..211d5112623e 100644
--- a/arch/x86/kernel/cpu/sgx/driver/driver.h
+++ b/arch/x86/kernel/cpu/sgx/driver/driver.h
@@ -34,6 +34,14 @@ extern u32 sgx_xsave_size_tbl[64];
 extern const struct file_operations sgx_provision_fops;
 
 long sgx_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
+
+#ifdef CONFIG_INTEL_SGX_DRIVER
 int sgx_drv_init(void);
+#else
+static inline int sgx_drv_init(void)
+{
+	return -ENODEV;
+}
+#endif
 
 #endif /* __ARCH_X86_INTEL_SGX_H__ */
-- 
2.22.0


                 reply	other threads:[~2019-07-12  4:06 UTC|newest]

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