From: Shreyas Bhatewara Date: Mon, 19 Jul 2010 07:02:13 +0000 (+0000) Subject: net-next: vmxnet3 fixes [4/5] Do not reset when the device is not opened X-Git-Tag: v5.15~28789^2~174 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=d9a5f210c5ef338295cf1c29d98825722351bed7;p=mirror_ubuntu-kernels.git net-next: vmxnet3 fixes [4/5] Do not reset when the device is not opened Hold rtnl_lock to get the right link state. While asynchronously resetting the device, hold rtnl_lock to get the right value from netif_running. If a reset is scheduled, and the device goes thru close and open, it may happen that reset and open may run in parallel. Holding rtnl_lock will avoid this. Signed-off-by: Shreyas Bhatewara Signed-off-by: David S. Miller --- diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index 57d3850cca8d..3b55fbd1294d 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -2365,6 +2365,7 @@ vmxnet3_reset_work(struct work_struct *data) return; /* if the device is closed, we must leave it alone */ + rtnl_lock(); if (netif_running(adapter->netdev)) { printk(KERN_INFO "%s: resetting\n", adapter->netdev->name); vmxnet3_quiesce_dev(adapter); @@ -2373,6 +2374,7 @@ vmxnet3_reset_work(struct work_struct *data) } else { printk(KERN_INFO "%s: already closed\n", adapter->netdev->name); } + rtnl_unlock(); clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); }