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authorBabu Moger <babu.moger@oracle.com>2017-05-25 02:55:11 +0300
committerDavid S. Miller <davem@davemloft.net>2017-05-25 22:06:50 +0300
commit97d9f969161d79e6a4bba247e67ce731ff861f79 (patch)
tree5e2102013e33c46e4a90b6269cc1b8b530232dae /arch/sparc/Kconfig
parent9ab6055f959032258c0f83a070cd0d26ed7a8fc5 (diff)
downloadlinux-97d9f969161d79e6a4bba247e67ce731ff861f79.tar.xz
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>
Diffstat (limited to 'arch/sparc/Kconfig')
-rw-r--r--arch/sparc/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 58243b0d21c0..eb213b5000c8 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -92,6 +92,9 @@ config ARCH_DEFCONFIG
config ARCH_PROC_KCORE_TEXT
def_bool y
+config CPU_BIG_ENDIAN
+ def_bool y
+
config ARCH_ATU
bool
default y if SPARC64