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Commit a95436e4 authored by Borislav Petkov's avatar Borislav Petkov Committed by H. Peter Anvin
Browse files

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: default avatarBorislav Petkov <borislav.petkov@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent e4876839

arch/x86/kernel/cpu/mcheck/mce.c

+2 −2
Original line number Diff line number Diff line
@@ -242,7 +242,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp) 
	/*

	 * 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 @@ static int mce_start(int *no_way_out) 
	 * 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.