From: Catalin Marinas <catalin.marinas@arm.com>
Date: Fri, 25 Oct 2013 14:48:33 +0000 (+0100)
Subject: arm64: Fix the endianness of arch_spinlock_t
X-Git-Tag: firefly_0821_release~176^2~5049^2~18
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4a12cae7ef2612eb094c4b48e8b37cf837e3df55;p=firefly-linux-kernel-4.4.55.git

arm64: Fix the endianness of arch_spinlock_t

The owner and next members of the arch_spinlock_t structure need to be
swapped when compiling for big endian.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Matthew Leach <matthew.leach@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
---

diff --git a/arch/arm64/include/asm/spinlock_types.h b/arch/arm64/include/asm/spinlock_types.h
index 87692750ed94..b8d383665f56 100644
--- a/arch/arm64/include/asm/spinlock_types.h
+++ b/arch/arm64/include/asm/spinlock_types.h
@@ -23,8 +23,13 @@
 #define TICKET_SHIFT	16
 
 typedef struct {
+#ifdef __AARCH64EB__
+	u16 next;
+	u16 owner;
+#else
 	u16 owner;
 	u16 next;
+#endif
 } __aligned(4) arch_spinlock_t;
 
 #define __ARCH_SPIN_LOCK_UNLOCKED	{ 0 , 0 }