From: Dongjiu Geng <gengdongjiu@huawei.com>
Date: Tue, 7 Aug 2018 12:26:15 -0400
Subject: arm64 / ACPI: clean the additional checks before calling
 ghes_notify_sea()
Git-commit: 1035a0783523d8c730c44944a71b254f3a649e25
Patch-mainline: v4.19-rc1
References: fate#326250

In order to remove the additional check before calling the
ghes_notify_sea(), make stub definition when !CONFIG_ACPI_APEI_SEA.

After this cleanup, we can simply call the ghes_notify_sea() to let
APEI driver handle the SEA notification.

Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
 arch/arm64/mm/fault.c |    7 +------
 include/acpi/ghes.h   |    4 ++++
 2 files changed, 5 insertions(+), 6 deletions(-)

--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -670,12 +670,7 @@ static const struct fault_info fault_inf
  */
 int handle_guest_sea(phys_addr_t addr, unsigned int esr)
 {
-	int ret = -ENOENT;
-
-	if (IS_ENABLED(CONFIG_ACPI_APEI_SEA))
-		ret = ghes_notify_sea();
-
-	return ret;
+	return ghes_notify_sea();
 }
 
 /*
--- a/include/acpi/ghes.h
+++ b/include/acpi/ghes.h
@@ -118,6 +118,10 @@ static inline void *acpi_hest_get_next(s
 	     (void *)section - (void *)(estatus + 1) < estatus->data_length; \
 	     section = acpi_hest_get_next(section))
 
+#ifdef CONFIG_ACPI_APEI_SEA
 int ghes_notify_sea(void);
+#else
+static inline int ghes_notify_sea(void) { return -ENOENT; }
+#endif
 
 #endif /* GHES_H */