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Date: Mon, 26 Nov 2007 11:28:44 -0600 From: Steve Wise <swise@...ngridcomputing.com> To: rdreier@...co.com Cc: netdev@...r.kernel.org, general@...ts.openfabrics.org, ewg@...ts.openfabrics.org Subject: [PATCH 2.6.25 1/2] RDMA/cxgb3: Hold rtnl_lock() around ethtool get_drvinfo call. 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@...ngridcomputing.com> --- drivers/infiniband/hw/cxgb3/iwch_provider.c | 5 +++++ 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 b5436ca..69b1204 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); } - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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