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IB/ipath: Fix lockdep error upon "ifconfig ibN down"

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Signed-off-by: Bryan O'Sullivan <[email protected]>
Signed-off-by: Roland Dreier <[email protected]>
This commit is contained in:
Bryan O'Sullivan 2006-09-28 09:00:24 -07:00 • committed by Roland Dreier
commit 3d27b00457
1 changed files with 7 additions and 5 deletions
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12
drivers/infiniband/hw/ipath/ipath_verbs.c
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@ -1202,6 +1202,7 @@ static struct ib_ah *ipath_create_ah(struct ib_pd *pd,
struct ipath_ah *ah;
struct ib_ah *ret;
struct ipath_ibdev *dev = to_idev(pd->device);
unsigned long flags;
/* A multicast address requires a GRH (see ch. 8.4.1). */
if (ah_attr->dlid >= IPATH_MULTICAST_LID_BASE &&
@ -1228,16 +1229,16 @@ static struct ib_ah *ipath_create_ah(struct ib_pd *pd,
goto bail;
}
spin_lock(&dev->n_ahs_lock);
spin_lock_irqsave(&dev->n_ahs_lock, flags);
if (dev->n_ahs_allocated == ib_ipath_max_ahs) {
spin_unlock(&dev->n_ahs_lock);
spin_unlock_irqrestore(&dev->n_ahs_lock, flags);
kfree(ah);
ret = ERR_PTR(-ENOMEM);
goto bail;
}
dev->n_ahs_allocated++;
spin_unlock(&dev->n_ahs_lock);
spin_unlock_irqrestore(&dev->n_ahs_lock, flags);
/* ib_create_ah() will initialize ah->ibah. */
ah->attr = *ah_attr;
@ -1258,10 +1259,11 @@ static int ipath_destroy_ah(struct ib_ah *ibah)
{
struct ipath_ibdev *dev = to_idev(ibah->device);
struct ipath_ah *ah = to_iah(ibah);
unsigned long flags;
spin_lock(&dev->n_ahs_lock);
spin_lock_irqsave(&dev->n_ahs_lock, flags);
dev->n_ahs_allocated--;
spin_unlock(&dev->n_ahs_lock);
spin_unlock_irqrestore(&dev->n_ahs_lock, flags);
kfree(ah);