x86, mce: use atomic_inc_return() instead of add by 1
Use atomic_inc_return() instead of atomic_add_return() by 1.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 284d1de..7da8fec 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -242,7 +242,7 @@
/*
* Make sure only one CPU runs in machine check panic
*/
- if (atomic_add_return(1, &mce_paniced) > 1)
+ if (atomic_inc_return(&mce_paniced) > 1)
wait_for_panic();
barrier();
@@ -705,7 +705,7 @@
* global_nwo should be updated before mce_callin
*/
smp_wmb();
- order = atomic_add_return(1, &mce_callin);
+ order = atomic_inc_return(&mce_callin);
/*
* Wait for everyone.
