linux-kernel - [PATCH 4.15 171/202] alpha: fix reboot on Avanti platform

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Date:   Thu, 15 Feb 2018 16:17:51 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Mikulas Patocka <mpatocka@...hat.com>,
        Matt Turner <mattst88@...il.com>
Subject: [PATCH 4.15 171/202] alpha: fix reboot on Avanti platform

4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mikulas Patocka <mpatocka@...hat.com>

commit 55fc633c41a08ce9244ff5f528f420b16b1e04d6 upstream.

We need to define NEED_SRM_SAVE_RESTORE on the Avanti, otherwise we get
machine check exception when attempting to reboot the machine.

Signed-off-by: Mikulas Patocka <mpatocka@...hat.com>
Signed-off-by: Matt Turner <mattst88@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/alpha/kernel/pci_impl.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/alpha/kernel/pci_impl.h
+++ b/arch/alpha/kernel/pci_impl.h
@@ -144,7 +144,8 @@ struct pci_iommu_arena
 };
 
 #if defined(CONFIG_ALPHA_SRM) && \
-    (defined(CONFIG_ALPHA_CIA) || defined(CONFIG_ALPHA_LCA))
+    (defined(CONFIG_ALPHA_CIA) || defined(CONFIG_ALPHA_LCA) || \
+     defined(CONFIG_ALPHA_AVANTI))
 # define NEED_SRM_SAVE_RESTORE
 #else
 # undef NEED_SRM_SAVE_RESTORE