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| author | Babu Moger <babu.moger@oracle.com> | 2017-05-25 02:55:11 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-25 22:06:50 +0300 |
| commit | 97d9f969161d79e6a4bba247e67ce731ff861f79 (patch) | |
| tree | 5e2102013e33c46e4a90b6269cc1b8b530232dae /arch/sparc/Kconfig | |
| parent | 9ab6055f959032258c0f83a070cd0d26ed7a8fc5 (diff) | |
| download | linux-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: Håkon 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/Kconfig | 3 |
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 |