uio_pdrv_genirq: Remove warning when irq is not specified

Since e3a3c3a20555 ("UIO: fix uio_pdrv_genirq with device tree but no
interrupt"), the uio_pdrv_genirq has supported use without interrupt,
so the change in 7723f4c5ecdb ("driver core: platform: Add an error
message to") added false warnings for those cases.

Fixes: 7723f4c5ecdb ("driver core: platform: Add an error message to platform_get_irq*()")
Signed-off-by: Esben Haabendal <esben@geanix.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200701145659.3978-2-esben@geanix.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index ae319ef..1d69dd4 100644 (file)
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/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;