uio_pdrv_genirq: Remove warning when irq is not specified

Since e3a3c3a ("UIO: fix uio_pdrv_genirq with device tree but no
interrupt"), the uio_pdrv_genirq has supported use without interrupt,
so the change in 7723f4c ("driver core: platform: Add an error
message to") added false warnings for those cases.

Fixes: 7723f4c ("driver core: platform: Add an error message to platform_get_irq*()")
Signed-off-by: Esben Haabendal <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: esben

drivers/uio/uio_pdrv_genirq.c

@@ -159,7 +159,7 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
 	priv->pdev = pdev;
 
 	if (!uioinfo->irq) {
-		ret = platform_get_irq(pdev, 0);
+		ret = platform_get_irq_optional(pdev, 0);
 		uioinfo->irq = ret;
 		if (ret == -ENXIO && pdev->dev.of_node)
 			uioinfo->irq = UIO_IRQ_NONE;