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authorSteve Wise <swise@opengridcomputing.com>2007-11-26 11:28:44 -0600
committerRoland Dreier <rolandd@cisco.com>2008-01-25 14:15:26 -0800
commit7f049f2f4259e4a5c213720df1ce0c2ca095641a (patch)
treed59b130c0aa7f2600cb2c9dfd3d2b569c7bba601 /drivers/infiniband/hw/cxgb3
parent908cf9a565348b5a6d765d120cb189a568ea4883 (diff)
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 <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb3')
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_provider.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index b5436ca92e6..69b1204e05f 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -39,6 +39,7 @@
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
+#include <linux/rtnetlink.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -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);
}