From 7f049f2f4259e4a5c213720df1ce0c2ca095641a Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Mon, 26 Nov 2007 11:28:44 -0600 Subject: [PATCH] RDMA/cxgb3: Hold rtnl_lock() around ethtool get_drvinfo call Currently the call into cxgb3 to get the driver info is not serialized. The iw_cxgb3 module needs to hold the rtnl_lock around the ethtool ops call like dev_ioctl() does. Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb3/iwch_provider.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index b5436ca92e68..69b1204e05f0 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include @@ -1053,7 +1054,9 @@ static ssize_t show_fw_ver(struct class_device *cdev, char *buf) struct net_device *lldev = dev->rdev.t3cdev_p->lldev; PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev); + rtnl_lock(); lldev->ethtool_ops->get_drvinfo(lldev, &info); + rtnl_unlock(); return sprintf(buf, "%s\n", info.fw_version); } @@ -1065,7 +1068,9 @@ static ssize_t show_hca(struct class_device *cdev, char *buf) struct net_device *lldev = dev->rdev.t3cdev_p->lldev; PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev); + rtnl_lock(); lldev->ethtool_ops->get_drvinfo(lldev, &info); + rtnl_unlock(); return sprintf(buf, "%s\n", info.driver); }