diff options
| author | Roland Dreier <roland@eddore.topspincom.com> | 2005-07-27 14:41:32 -0700 |
|---|---|---|
| committer | Roland Dreier <roland@eddore.topspincom.com> | 2005-07-27 14:41:32 -0700 |
| commit | 2181858bb814b51de8ec25b3ddd37cd06c53b0c9 (patch) | |
| tree | 2fb09b6a44e17c0c3c85512a6c0ba7f5a983c0b0 /drivers/infiniband/ulp | |
| parent | abdf119b4dad015803819c3d046d20cfbd393e87 (diff) | |
[IB/ipoib]: Fix unsigned comparisons to handle wraparound
Fix handling of tx_head/tx_tail comparisons to handle wraparound.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/ulp')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_ib.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c index 8238766746b2..eee82363167d 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c @@ -81,7 +81,7 @@ void ipoib_free_ah(struct kref *kref) unsigned long flags; - if (ah->last_send <= priv->tx_tail) { + if ((int) priv->tx_tail - (int) ah->last_send >= 0) { ipoib_dbg(priv, "Freeing ah %p\n", ah->ah); ib_destroy_ah(ah->ah); kfree(ah); @@ -355,7 +355,7 @@ static void __ipoib_reap_ah(struct net_device *dev) spin_lock_irq(&priv->lock); list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list) - if (ah->last_send <= priv->tx_tail) { + if ((int) priv->tx_tail - (int) ah->last_send >= 0) { list_del(&ah->list); list_add_tail(&ah->list, &remove_list); } @@ -486,7 +486,7 @@ int ipoib_ib_dev_stop(struct net_device *dev) * assume the HW is wedged and just free up * all our pending work requests. */ - while (priv->tx_tail < priv->tx_head) { + while ((int) priv->tx_tail - (int) priv->tx_head < 0) { tx_req = &priv->tx_ring[priv->tx_tail & (IPOIB_TX_RING_SIZE - 1)]; dma_unmap_single(priv->ca->dma_device, |