If the function platform_get_irq() failed, the negative value returned will not be detected here. So fix error handling in mv_ehci_probe(). And when get irq failed, the function platform_get_irq() logs an error message, so remove redundant message here. Signed-off-by: Zhang Shengju <zhangshengju@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Tang Bin <tangbin@xxxxxxxxxxxxxxxxxxxx> --- drivers/usb/host/ehci-mv.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c index 1c079953e..b2da62bfd 100644 --- a/drivers/usb/host/ehci-mv.c +++ b/drivers/usb/host/ehci-mv.c @@ -166,9 +166,8 @@ static int mv_ehci_probe(struct platform_device *pdev) hcd->regs = ehci_mv->op_regs; hcd->irq = platform_get_irq(pdev, 0); - if (!hcd->irq) { - dev_err(&pdev->dev, "Cannot get irq."); - retval = -ENODEV; + if (hcd->irq < 0) { + retval = hcd->irq; goto err_disable_clk; } -- 2.20.1.windows.1