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powerpc/xive: Move a dereference below a NULL test

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[ Upstream commit cd5ff94577e004e0a4457e70d0ef3a030f4010b8 ]

Move the dereference of xc below the NULL test.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
zhong jiang 2018-09-26 20:09:32 +08:00 committed by Greg Kroah-Hartman
parent 38d7fa2815
commit ab99285882
1 changed files with 4 additions and 3 deletions
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7
arch/powerpc/sysdev/xive/common.c
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@ -1009,12 +1009,13 @@ static void xive_ipi_eoi(struct irq_data *d)
{
struct xive_cpu *xc = __this_cpu_read(xive_cpu);
DBG_VERBOSE("IPI eoi: irq=%d [0x%lx] (HW IRQ 0x%x) pending=%02x\n",
d->irq, irqd_to_hwirq(d), xc->hw_ipi, xc->pending_prio);
/* Handle possible race with unplug and drop stale IPIs */
if (!xc)
return;
DBG_VERBOSE("IPI eoi: irq=%d [0x%lx] (HW IRQ 0x%x) pending=%02x\n",
d->irq, irqd_to_hwirq(d), xc->hw_ipi, xc->pending_prio);
xive_do_source_eoi(xc->hw_ipi, &xc->ipi_data);
xive_do_queue_eoi(xc);
}