[PATCH v2 ] ipmi_si: Fix false error about IRQ registration

[John Donnelly <john.p.donnelly@oracle.com>]

Since commit 7723f4c5ecdb ("driver core: platform: Add an error message
to platform_get_irq()"), platform_get_irq() will call dev_err() on an
error,  even though the IRQ usage in the ipmi_si driver is optional.

Use the platform_get_irq_optional() call to avoid the message from
alerting users with false alarms.

cc: stable@vger.kernel.org # 5.4.x

Signed-off-by: John Donnelly <john.p.donnelly@oracle.com>
---
 drivers/char/ipmi/ipmi_si_platform.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/char/ipmi/ipmi_si_platform.c b/drivers/char/ipmi/ipmi_si_platform.c
index c78127ccbc0d..638c693e17ad 100644
--- a/drivers/char/ipmi/ipmi_si_platform.c
+++ b/drivers/char/ipmi/ipmi_si_platform.c
@@ -194,7 +194,7 @@ static int platform_ipmi_probe(struct platform_device *pdev)
 	else
 		io.slave_addr = slave_addr;
 
-	io.irq = platform_get_irq(pdev, 0);
+	io.irq = platform_get_irq_optional(pdev, 0);
 	if (io.irq > 0)
 		io.irq_setup = ipmi_std_irq_setup;
 	else
@@ -378,7 +378,7 @@ static int acpi_ipmi_probe(struct platform_device *pdev)
 		io.irq = tmp;
 		io.irq_setup = acpi_gpe_irq_setup;
 	} else {
-		int irq = platform_get_irq(pdev, 0);
+		int irq = platform_get_irq_optional(pdev, 0);
 
 		if (irq > 0) {
 			io.irq = irq;
-- 
2.20.1