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[net-next,2/6] ixgbevf: set the disable state when ixgbevf_qv_disable is called

Message ID 1389868210-24035-3-git-send-email-aaron.f.brown@intel.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Brown, Aaron F Jan. 16, 2014, 10:30 a.m. UTC 
From: Jacob Keller <jacob.e.keller@intel.com>

The ixgbevf_qv_disable function used by CONFIG_NET_RX_BUSY_POLL is broken,
because it does not properly set the IXGBEVF_QV_STATE_DISABLED bit, indicating
that the q_vector should be disabled (and preventing future locks from
obtaining the vector). This patch corrects the issue by setting the disable
state.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index bb76e96..d7cec1d 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -260,6 +260,7 @@  static inline bool ixgbevf_qv_disable(struct ixgbevf_q_vector *q_vector)
 	spin_lock_bh(&q_vector->lock);
 	if (q_vector->state & IXGBEVF_QV_OWNED)
 		rc = false;
+	q_vector->state |= IXGBEVF_QV_STATE_DISABLED;
 	spin_unlock_bh(&q_vector->lock);
 	return rc;
 }