Commit af794206 authored by David Howells's avatar David Howells

MN10300: atomic_read() should ensure it emits a load

atomic_read() needs to ensure that it emits a load (which it can do by using
ACCESS_ONCE()).
Reported-by: default avatarPeter Zijlstra <peterz@infradead.org>
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
parent dcca52c2
......@@ -139,7 +139,7 @@ static inline unsigned long __cmpxchg(volatile unsigned long *m,
* Atomically reads the value of @v. Note that the guaranteed
* useful range of an atomic_t is only 24 bits.
*/
#define atomic_read(v) ((v)->counter)
#define atomic_read(v) (ACCESS_ONCE((v)->counter))
/**
* atomic_set - set atomic variable
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment