| Message ID | E1cPpAq-0005uQ-1T@rmk-PC.armlinux.org.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c index 6ea5caddca62..614dfde657fe 100644 --- a/drivers/net/ethernet/marvell/mvmdio.c +++ b/drivers/net/ethernet/marvell/mvmdio.c @@ -221,6 +221,12 @@ static int orion_mdio_probe(struct platform_device *pdev) clk_prepare_enable(dev->clk); dev->err_interrupt = platform_get_irq(pdev, 0); + if (dev->err_interrupt > 0 && + resource_size(r) < MVMDIO_ERR_INT_MASK + 4) { + dev_err(&pdev->dev, + "disabling interrupt, resource size is too small\n"); + dev->err_interrupt = 0; + } if (dev->err_interrupt > 0) { ret = devm_request_irq(&pdev->dev, dev->err_interrupt, orion_mdio_err_irq,
Disable the MDIO interrupt, falling back to polled mode, if the resource size does not allow us to access the interrupt registers. All current DT bindings use a size of 0x84, which allows access, but verifying it is good practice. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> --- drivers/net/ethernet/marvell/mvmdio.c | 6 ++++++ 1 file changed, 6 insertions(+)