[PATCH 2/4] powerpc/xive: Fix xmon support on the PowerNV platform

[Cédric Le Goater]

The PowerNV platform has multiple IRQ chips and the xmon command
dumping the state of the XIVE interrupt should only operate on the
XIVE IRQ chip.

Fixes: 5896163f7f91 ("powerpc/xmon: Improve output of XIVE interrupts")
Cc: sta...@vger.kernel.org # v5.4+
Signed-off-by: Cédric Le Goater <c...@kaod.org>
---
 arch/powerpc/sysdev/xive/common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/sysdev/xive/common.c 
b/arch/powerpc/sysdev/xive/common.c
index 550baba98ec9..8155adc2225a 100644
--- a/arch/powerpc/sysdev/xive/common.c
+++ b/arch/powerpc/sysdev/xive/common.c
@@ -261,11 +261,15 @@ notrace void xmon_xive_do_dump(int cpu)
 
 int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d)
 {
+       struct irq_chip *chip = irq_data_get_irq_chip(d);
        int rc;
        u32 target;
        u8 prio;
        u32 lirq;
 
+       if (!is_xive_irq(chip))
+               return -EINVAL;
+
        rc = xive_ops->get_irq_config(hw_irq, &target, &prio, &lirq);
        if (rc) {
                xmon_printf("IRQ 0x%08x : no config rc=%d\n", hw_irq, rc);
-- 
2.21.1