[PATCH] of: unittest: Use platform_get_irq_optional() for non-existing interrupt

[Geert Uytterhoeven]

As platform_get_irq() now prints an error when the interrupt
does not exist, a scary warning may be printed for a non-existing
interrupt:

    platform testcase-data:testcase-device2: IRQ index 0 not found

Fix this by calling platform_get_irq_optional() instead.

Fixes: 7723f4c5ecdb8d83 ("driver core: platform: Add an error message to 
platform_get_irq*()")
Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
---
This is a fix for v5.4.
---
 drivers/of/unittest.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 9efae29722588a35..34da22f8b0660989 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1121,7 +1121,7 @@ static void __init of_unittest_platform_populate(void)
                np = of_find_node_by_path("/testcase-data/testcase-device2");
                pdev = of_find_device_by_node(np);
                unittest(pdev, "device 2 creation failed\n");
-               irq = platform_get_irq(pdev, 0);
+               irq = platform_get_irq_optional(pdev, 0);
                unittest(irq < 0 && irq != -EPROBE_DEFER,
                         "device parsing error failed - %d\n", irq);
        }
-- 
2.17.1