| commit | 0e64123141f3854e695eb4924d82b52856691466 | [log] [tgz] |
|---|---|---|
| author | Olivier Deprez <olivier.deprez@arm.com> | Thu Sep 23 10:07:05 2021 +0200 |
| committer | Olivier Deprez <olivier.deprez@arm.com> | Tue Oct 26 16:50:53 2021 +0100 |
| tree | 9f79e140db584f9b107f4e33373a0075983df1f4 | |
| parent | 98854e9675dc7d951fa9c4e10d9c9d230c54bde6 [diff] [blame] |
Update Linux to v5.4.148 Sourced from [1] [1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/arch/parisc/lib/bitops.c b/arch/parisc/lib/bitops.c index 70ffbcf..2e4d1f0 100644 --- a/arch/parisc/lib/bitops.c +++ b/arch/parisc/lib/bitops.c
@@ -79,3 +79,15 @@ _atomic_spin_unlock_irqrestore(ptr, flags); return (unsigned long)prev; } + +u8 __cmpxchg_u8(volatile u8 *ptr, u8 old, u8 new) +{ + unsigned long flags; + u8 prev; + + _atomic_spin_lock_irqsave(ptr, flags); + if ((prev = *ptr) == old) + *ptr = new; + _atomic_spin_unlock_irqrestore(ptr, flags); + return prev; +}