usb: host: ehci-tegra: Fix error handling in tegra_ehci_probe()

If the function platform_get_irq() failed, the negative value
returned will not be detected here. So fix error handling in
tegra_ehci_probe().

Fixes: 79ad3b5add4a ("usb: host: Add EHCI driver for NVIDIA Tegra SoCs")
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20201026090657.49988-1-tangbin@cmss.chinamobile.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index e077b2c..869d9c4 100644 (file)
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -479,8 +479,8 @@ static int tegra_ehci_probe(struct platform_device *pdev)
        u_phy->otg->host = hcd_to_bus(hcd);
 
        irq = platform_get_irq(pdev, 0);
-       if (!irq) {
-               err = -ENODEV;
+       if (irq < 0) {
+               err = irq;
                goto cleanup_phy;
        }