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* [PATCH net-next 1/6] bnx2: Prevent ethtool -s from crashing when device is down.
@ 2008-07-11  1:29 Michael Chan
  2008-07-11  1:29 ` [PATCH net-next 2/6] bnx2: Add PCI ID for 5716 Michael Chan
                   ` (5 more replies)
  0 siblings, 6 replies; 12+ messages in thread
From: Michael Chan @ 2008-07-11  1:29 UTC (permalink / raw)
  To: davem; +Cc: netdev, Michael Chan

The device may be in D3-hot state and may crash if we try to
configure the speed settings by accessing the registers.

Signed-off-by: Michael Chan <mchan@broadcom.com>
---
 drivers/net/bnx2.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index ad61cfd..e9cfb02 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -6215,6 +6215,12 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 	    !(bp->phy_flags & BNX2_PHY_FLAG_REMOTE_PHY_CAP))
 		goto err_out_unlock;
 
+	/* If device is down, we can store the settings only if the user
+	 * is setting the currently active port.
+	 */
+	if (!netif_running(dev) && cmd->port != bp->phy_port)
+		goto err_out_unlock;
+
 	if (cmd->autoneg == AUTONEG_ENABLE) {
 		autoneg |= AUTONEG_SPEED;
 
@@ -6272,7 +6278,12 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 	bp->req_line_speed = req_line_speed;
 	bp->req_duplex = req_duplex;
 
-	err = bnx2_setup_phy(bp, cmd->port);
+	err = 0;
+	/* If device is down, the new settings will be picked up when it is
+	 * brought up.
+	 */
+	if (netif_running(dev))
+		err = bnx2_setup_phy(bp, cmd->port);
 
 err_out_unlock:
 	spin_unlock_bh(&bp->phy_lock);
-- 
1.5.5.GIT



^ permalink raw reply related	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2008-07-15  5:40 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-07-11  1:29 [PATCH net-next 1/6] bnx2: Prevent ethtool -s from crashing when device is down Michael Chan
2008-07-11  1:29 ` [PATCH net-next 2/6] bnx2: Add PCI ID for 5716 Michael Chan
2008-07-15  5:37   ` David Miller
2008-07-11  1:29 ` [PATCH net-next 3/6] bnx2: Add ack parameter to bnx2_fw_sync() Michael Chan
2008-07-15  5:38   ` David Miller
2008-07-11  1:29 ` [PATCH net-next 4/6] bnx2: Allow flexible VLAN tag settings Michael Chan
2008-07-15  5:39   ` David Miller
2008-07-11  1:29 ` [PATCH net-next 5/6] bnx2: Support secondary MAC addresses Michael Chan
2008-07-15  5:39   ` David Miller
2008-07-11  1:29 ` [PATCH net-next 6/6] bnx2: Update version to 1.7.8 Michael Chan
2008-07-15  5:40   ` David Miller
2008-07-15  5:37 ` [PATCH net-next 1/6] bnx2: Prevent ethtool -s from crashing when device is down David Miller

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