From ced39ca0e9d28c4b53467bb736a0b4e2d043ea89 Mon Sep 17 00:00:00 2001
From: Loc Ho <lho@apm.com>
Date: Fri, 21 Jul 2017 11:24:37 -0700
Subject: [PATCH 31/32] ACPI: APEI: Enable APEI multiple GHES source to share a
 single external IRQ

Git-commit: bdb9458a3382ba745a66be5526d3899103c76eda
Patch-mainline: Queued
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
References: fate#323583

X-Gene platforms describe multiple GHES error sources with the same
hardware error notification type (external interrupt) and interrupt
number.

Change the GHES interrupt request to support sharing the same IRQ.

This change includs contributions from Tuan Phan <tphan@apm.com>.

Signed-off-by: Loc Ho <lho@apm.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
 drivers/acpi/apei/ghes.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index bb830444df28..c2214fd277c3 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -1154,7 +1154,8 @@ static int ghes_probe(struct platform_device *ghes_dev)
 			       generic->header.source_id);
 			goto err_edac_unreg;
 		}
-		rc = request_irq(ghes->irq, ghes_irq_func, 0, "GHES IRQ", ghes);
+		rc = request_irq(ghes->irq, ghes_irq_func, IRQF_SHARED,
+				 "GHES IRQ", ghes);
 		if (rc) {
 			pr_err(GHES_PFX "Failed to register IRQ for generic hardware error source: %d\n",
 			       generic->header.source_id);
-- 
2.11.0