When resetting an IPI, hw_ipi should also be set to zero.

Signed-off-by: Cédric Le Goater <c...@kaod.org>
---
 arch/powerpc/sysdev/xive/spapr.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c
index f24a70bc6855..d9c4c9366049 100644
--- a/arch/powerpc/sysdev/xive/spapr.c
+++ b/arch/powerpc/sysdev/xive/spapr.c
@@ -431,7 +431,11 @@ static int xive_spapr_get_ipi(unsigned int cpu, struct 
xive_cpu *xc)
 
 static void xive_spapr_put_ipi(unsigned int cpu, struct xive_cpu *xc)
 {
+       if (!xc->hw_ipi)
+               return;
+
        xive_irq_bitmap_free(xc->hw_ipi);
+       xc->hw_ipi = 0;
 }
 #endif /* CONFIG_SMP */
 
-- 
2.13.5

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