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[TG3]: Fix crash during tg3_init_one(). 

The driver will crash when the chip has been initialized by EFI before
tg3_init_one().  In this case, the driver will call tg3_chip_reset()
before allocating consistent memory.

The bug is fixed by checking for tp->hw_status before accessing it
during tg3_chip_reset().

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2007-04-06 17:35:37 -07:00 committed by David S. Miller
parent 161980f4c6
commit b8fa2f3a82
1 changed files with 4 additions and 2 deletions
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6
drivers/net/tg3.c
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@ -4834,8 +4834,10 @@ static int tg3_chip_reset(struct tg3 *tp)
* sharing or irqpoll.
*/
tp->tg3_flags |= TG3_FLAG_CHIP_RESETTING;
tp->hw_status->status = 0;
tp->hw_status->status_tag = 0;
if (tp->hw_status) {
tp->hw_status->status = 0;
tp->hw_status->status_tag = 0;
}
tp->last_tag = 0;
smp_mb();
synchronize_irq(tp->pdev->irq);