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net: thunder: Check for driver data in nicvf_remove()

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In some cases the crash is caused by nicvf_remove() being called from
outside. For example, if we try to feed the device to vfio after the
probe has failed for some reason. So, move the check to better place.

Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Fedin 2015-11-16 17:51:34 +03:00 committed by David S. Miller
parent 88ad4175b2
commit 7750130d93
1 changed files with 8 additions and 5 deletions
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13
drivers/net/ethernet/cavium/thunder/nicvf_main.c
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@ -1583,8 +1583,14 @@ err_disable_device:
static void nicvf_remove(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct nicvf *nic = netdev_priv(netdev);
struct net_device *pnetdev = nic->pnicvf->netdev;
struct nicvf *nic;
struct net_device *pnetdev;
if (!netdev)
return;
nic = netdev_priv(netdev);
pnetdev = nic->pnicvf->netdev;
/* Check if this Qset is assigned to different VF.
* If yes, clean primary and all secondary Qsets.
@ -1600,9 +1606,6 @@ static void nicvf_remove(struct pci_dev *pdev)
static void nicvf_shutdown(struct pci_dev *pdev)
{
if (!pci_get_drvdata(pdev))
return;
nicvf_remove(pdev);
}