From: Steve Wise Date: Tue, 8 Jul 2008 21:40:05 +0000 (-0700) Subject: RDMA/cxgb3: Fix regression caused by class_device -> device conversion X-Git-Tag: v2.6.26~37^2 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=5e19cf663be534c7c15a35a86fa7ddc9f797e4f4;p=linux-2.6-omap-h63xx.git RDMA/cxgb3: Fix regression caused by class_device -> device conversion The change to iwch_provider.c in commit f4e91eb4 ("IB: convert struct class_device to struct device") undid the fix done in commit 7f049f2f ("RDMA/cxgb3: Hold rtnl_lock() around ethtool get_drvinfo call"). It removed the calls to rtnl_lock() that serialized the iw_cxgb3 ethtool ops calls into the cxgb3 driver. This locking is needed to avoid messing up the internal state of the cxgb3 driver. Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index 8934178a23e..95f82cfb6c5 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -1096,7 +1096,9 @@ static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, ch struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev; PDBG("%s dev 0x%p\n", __func__, dev); + rtnl_lock(); lldev->ethtool_ops->get_drvinfo(lldev, &info); + rtnl_unlock(); return sprintf(buf, "%s\n", info.fw_version); } @@ -1109,7 +1111,9 @@ static ssize_t show_hca(struct device *dev, struct device_attribute *attr, struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev; PDBG("%s dev 0x%p\n", __func__, dev); + rtnl_lock(); lldev->ethtool_ops->get_drvinfo(lldev, &info); + rtnl_unlock(); return sprintf(buf, "%s\n", info.driver); }