From 23198ddffb6cddb5d5824230af4dd4b46e4046a4 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 27 Sep 2017 22:38:19 -0700 Subject: sparc32: Add cmpxchg64(). This fixes the build with i40e driver enabled. Reported-by: Guenter Roeck Signed-off-by: David S. Miller --- arch/sparc/lib/atomic32.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'arch/sparc/lib') diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c index 2c373329d5cb..ddacb5aeb424 100644 --- a/arch/sparc/lib/atomic32.c +++ b/arch/sparc/lib/atomic32.c @@ -172,6 +172,20 @@ unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new) } EXPORT_SYMBOL(__cmpxchg_u32); +u64 __cmpxchg_u64(u64 *ptr, u64 old, u64 new) +{ + unsigned long flags; + u64 prev; + + spin_lock_irqsave(ATOMIC_HASH(ptr), flags); + if ((prev = *ptr) == old) + *ptr = new; + spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags); + + return prev; +} +EXPORT_SYMBOL(__cmpxchg_u64); + unsigned long __xchg_u32(volatile u32 *ptr, u32 new) { unsigned long flags; -- cgit v1.2.3-59-g8ed1b