usbnet: smsc95xx: Clean up unnecessary BUG_ON() upon register access

smsc95xx_read_reg() and smsc95xx_write_reg() call BUG_ON() if the
struct usbnet pointer passed in is NULL.

The functions have just been amended to dereference the pointer on
entry.  So the kernel now oopses if the pointer is NULL, eliminating
the need for an explicit BUG_ON().

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 5458629cf694c20fb30f41a6b84c880bccbb85b1..bfb58c91db047e92afc52e50a74f1521b8320c3b 100644 (file)
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -86,8 +86,6 @@ static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
        int ret;
        int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
 
-       BUG_ON(!dev);
-
        if (current != pdata->pm_task)
                fn = usbnet_read_cmd;
        else
@@ -117,8 +115,6 @@ static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
        int ret;
        int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
 
-       BUG_ON(!dev);
-
        if (current != pdata->pm_task)
                fn = usbnet_write_cmd;
        else