usb: host: ehci-platform: BUG_ON() to WARN_ON() on probe

usb_ehci_pdata is certainly required in ehci-platform driver.
This patch avoids using BUG_ON() from driver,
and return from probe with WARN_ON() if pdata was NULL.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 4b1d896d5a2214f75f32a5e943e9a4e5804f24f9..a2aaef618aea09ba351e2d2fca645ba81e621a6b 100644 (file)
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -82,10 +82,14 @@ static int __devinit ehci_platform_probe(struct platform_device *dev)
 {
        struct usb_hcd *hcd;
        struct resource *res_mem;
+       struct usb_ehci_pdata *pdata = dev->dev.platform_data;
        int irq;
        int err = -ENOMEM;
 
-       BUG_ON(!dev->dev.platform_data);
+       if (!pdata) {
+               WARN_ON(1);
+               return -ENODEV;
+       }
 
        if (usb_disabled())
                return -ENODEV;