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    net: fec: Ensure that initialization is done prior to request_irq() · 7f7d6c28
    Fabio Estevam 提交于
    Currently request_irq() is called prior to fec_enet_init() and fec_ptp_init(),
    which causes the following crash on a mx53qsb:
    
    Unable to handle kernel NULL pointer dereference at virtual address 00000002
    pgd = 80004000
    [00000002] *pgd=00000000
    Internal error: Oops: 5 [#1] SMP ARM
    Modules linked in:
    CPU: 0    Not tainted  (3.8.0-rc7-next-20130215+ #346)
    PC is at fec_enet_interrupt+0xd0/0x348
    LR is at fec_enet_interrupt+0xb8/0x348
    pc : [<80372b7c>]    lr : [<80372b64>]    psr: 60000193
    sp : df855c20  ip : df855c20  fp : df855c74
    r10: 00000516  r9 : 1c000000  r8 : 00000000
    r7 : 00000000  r6 : 00000000  r5 : 00000000  r4 : df9b7800
    r3 : df9b7df4  r2 : 00000000  r1 : 00000000  r0 : df9b7d34
    
    Ensure that such initialization functions are called prior to requesting the
    interrupts, so that all necessary the data structures are in place when the
    irqs occur.
    Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    7f7d6c28
fec.c 49.9 KB