linux-kernel - [PATCH] cxgb3: fix crash due to manipulating queues before registration

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Message-Id: <1288242390-28574-1-git-send-email-nacc@us.ibm.com>
Date:	Wed, 27 Oct 2010 22:06:30 -0700
From:	Nishanth Aravamudan <nacc@...ibm.com>
To:	eric.dumazet@...il.com
Cc:	Nishanth Aravamudan <nacc@...ibm.com>, sonnyrao@...ibm.com,
	Divy Le Ray <divy@...lsio.com>,
	Dimitris Michailidis <dm@...lsio.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] cxgb3: fix crash due to manipulating queues before registration

Hi Eric,

Something like the following?:

Thanks,
Nish


Along the same lines as "cxgb4: fix crash due to manipulating queues
before registration" (8f6d9f40476895571df039b6f1f5230ec7faebad), before
commit "net: allocate tx queues in register_netdevice"
netif_tx_stop_all_queues and related functions could be used between
device allocation and registration but now only after registration.
cxgb4 has such a call before registration and crashes now.  Move it
after register_netdev.

Signed-off-by: Nishanth Aravamudan <nacc@...ibm.com>
Cc: eric.dumazet@...il.com
Cc: sonnyrao@...ibm.com
Cc: Divy Le Ray <divy@...lsio.com>
Cc: Dimitris Michailidis <dm@...lsio.com>
Cc: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/net/cxgb3/cxgb3_main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index 4e3c123..96c70a5 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -3301,7 +3301,6 @@ static int __devinit init_one(struct pci_dev *pdev,
 		pi->rx_offload = T3_RX_CSUM | T3_LRO;
 		pi->port_id = i;
 		netif_carrier_off(netdev);
-		netif_tx_stop_all_queues(netdev);
 		netdev->irq = pdev->irq;
 		netdev->mem_start = mmio_start;
 		netdev->mem_end = mmio_start + mmio_len - 1;
@@ -3342,6 +3341,7 @@ static int __devinit init_one(struct pci_dev *pdev,
 				adapter->name = adapter->port[i]->name;
 
 			__set_bit(i, &adapter->registered_device_map);
+			 netif_tx_stop_all_queues(adapter->port[i]);
 		}
 	}
 	if (!adapter->registered_device_map) {
-- 
1.7.1

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