• Andy Shevchenko's avatar
    net/macb: check if macb_config present · f36dbe6a
    Andy Shevchenko authored
    The commit 98b5a0f4 introduces jumbo frame support, but also it assumes
    that macb_config present which is not always true.
    
    The configuration without macb_config fails to boot.
    
     Unable to handle kernel NULL pointer dereference at virtual address 00000010
     ptbr = 90350000 pgd = 00000000
     Oops: Kernel access of bad area, sig: 11 [#1]
     FRAME_POINTER chip: 0x01f:0x1e82 rev 2
     Modules linked in:
     CPU: 0 PID: 1 Comm: swapper Not tainted 4.2.0-rc3-next-20150723+ #13
     task: 91c26000 ti: 91c28000 task.ti: 91c28000
     PC is at macb_probe+0x140/0x61c
    
    Fixes: 98b5a0f4 (net: macb: Add support for jumbo frames)
    Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    f36dbe6a
macb.c 74.8 KB