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cnic: Fix crash during bnx2x MTU change.

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cnic_service_bnx2x() irq handler can be called during chip reset from
MTU change.  Need to check that the cnic's device state is up before
handling the irq.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2010-04-07 20:53:54 -07:00 committed by David S. Miller
parent 04b1a22350
commit 94824f3dbe
1 changed files with 5 additions and 5 deletions
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10
drivers/net/cnic.c
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@ -2334,13 +2334,13 @@ static int cnic_service_bnx2x(void *data, void *status_blk)
struct cnic_local *cp = dev->cnic_priv;
u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
prefetch(cp->status_blk.bnx2x);
prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
prefetch(cp->status_blk.bnx2x);
prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
tasklet_schedule(&cp->cnic_irq_task);
cnic_chk_pkt_rings(cp);
cnic_chk_pkt_rings(cp);
}
return 0;
}