From: Babu Moger <babu.moger@xxxxxxxxxx>
Date: Thu, 8 Jun 2017 15:17:22 -0700
While working on enabling queued rwlock on SPARC, found
this following code in include/asm-generic/qrwlock.h
which uses CONFIG_CPU_BIG_ENDIAN to clear a byte.
static inline u8 *__qrwlock_write_byte(struct qrwlock *lock)
{
return (u8 *)lock + 3 * IS_BUILTIN(CONFIG_CPU_BIG_ENDIAN);
}
Problem is many of the fixed big endian architectures dont define
CPU_BIG_ENDIAN and clears the wrong byte.
Define CPU_BIG_ENDIAN for all the fixed big endian architecture.
Here is the orinal discussion
http://www.spinics.net/lists/devicetree/msg178101.html
Signed-off-by: Babu Moger <babu.moger@xxxxxxxxxx>
Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
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