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Diffstat (limited to 'arch/x86/kernel/apic/apic.c')
-rw-r--r--arch/x86/kernel/apic/apic.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 926939978c1c..9318fe7d850e 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -403,10 +403,9 @@ static unsigned int reserve_eilvt_offset(int offset, unsigned int new)
if (vector && !eilvt_entry_is_changeable(vector, new))
/* may not change if vectors are different */
return rsvd;
- rsvd = atomic_cmpxchg(&eilvt_offsets[offset], rsvd, new);
- } while (rsvd != new);
+ } while (!atomic_try_cmpxchg(&eilvt_offsets[offset], &rsvd, new));
- rsvd &= ~APIC_EILVT_MASKED;
+ rsvd = new & ~APIC_EILVT_MASKED;
if (rsvd && rsvd != vector)
pr_info("LVT offset %d assigned for vector 0x%02x\n",
offset, rsvd);