From: Allen Pais <allen.pais@oracle.com>
Date: Wed, 14 Jun 2017 07:12:36 +0000 (+0530)
Subject: arch/sparc: Define config parameter CPU_BIG_ENDIAN
X-Git-Tag: v4.1.12-104.0.20170618_1145~30
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6e89f566d32e4fae3fc608a29508fbc6770172a8;p=users%2Fjedix%2Flinux-maple.git

arch/sparc: Define config parameter CPU_BIG_ENDIAN

Found this problem while enabling queued rwlock on SPARC.
The parameter CONFIG_CPU_BIG_ENDIAN is used to clear the
specific byte in qrwlock structure. Without this parameter,
we clear the wrong byte. Here is the code.

static inline u8 *__qrwlock_write_byte(struct qrwlock *lock)
 {
        return (u8 *)lock + 3 * IS_BUILTIN(CONFIG_CPU_BIG_ENDIAN);
 }

Define CPU_BIG_ENDIAN for SPARC to fix it.

Signed-off-by: Babu Moger <babu.moger@oracle.com>
Reviewed-by: HÃ¥kon Bugge <haakon.bugge@oracle.com>
Reviewed-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Reviewed-by: Vijay Kumar <vijay.ac.kumar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 97d9f969161d79e6a4bba247e67ce731ff861f79)

Signed-off-by: Babu Moger <babu.moger@oracle.com>

Orabug: 26183741
Signed-off-by: Allen Pais <allen.pais@oracle.com>
---

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 83820b13a8b61..b338d6a4f17ec 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -96,6 +96,9 @@ config ARCH_DEFCONFIG
 config ARCH_PROC_KCORE_TEXT
 	def_bool y
 
+config CPU_BIG_ENDIAN
+	def_bool y
+
 config IOMMU_HELPER
 	bool
 	default y if SPARC64