diff options
| author | Colin Ian King <colin.king@canonical.com> | 2021-04-09 19:37:26 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-12 23:15:21 +0300 |
| commit | d0494135f94c7ab5a9cf7a9094fbb233275c7ba6 (patch) | |
| tree | 065099f245c66dc8f0ae121796eff761c81ee7f1 /drivers/net/ethernet/hisilicon | |
| parent | e701a25840360706fe4cf5de0015913ca19c274b (diff) | |
| download | linux-d0494135f94c7ab5a9cf7a9094fbb233275c7ba6.tar.xz | |
net: hns3: Fix potential null pointer defererence of null ae_dev
The reset_prepare and reset_done calls have a null pointer check
on ae_dev however ae_dev is being dereferenced via the call to
ns3_is_phys_func with the ae->pdev argument. Fix this by performing
a null pointer check on ae_dev and hence short-circuiting the
dereference to ae_dev on the call to ns3_is_phys_func.
Addresses-Coverity: ("Dereference before null check")
Fixes: 715c58e94f0d ("net: hns3: add suspend and resume pm_ops")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/hisilicon')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 25afe5a3348c..c21dd11baed9 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -2369,9 +2369,9 @@ static int __maybe_unused hns3_suspend(struct device *dev) { struct hnae3_ae_dev *ae_dev = dev_get_drvdata(dev); - if (hns3_is_phys_func(ae_dev->pdev)) { + if (ae_dev && hns3_is_phys_func(ae_dev->pdev)) { dev_info(dev, "Begin to suspend.\n"); - if (ae_dev && ae_dev->ops && ae_dev->ops->reset_prepare) + if (ae_dev->ops && ae_dev->ops->reset_prepare) ae_dev->ops->reset_prepare(ae_dev, HNAE3_FUNC_RESET); } @@ -2382,9 +2382,9 @@ static int __maybe_unused hns3_resume(struct device *dev) { struct hnae3_ae_dev *ae_dev = dev_get_drvdata(dev); - if (hns3_is_phys_func(ae_dev->pdev)) { + if (ae_dev && hns3_is_phys_func(ae_dev->pdev)) { dev_info(dev, "Begin to resume.\n"); - if (ae_dev && ae_dev->ops && ae_dev->ops->reset_done) + if (ae_dev->ops && ae_dev->ops->reset_done) ae_dev->ops->reset_done(ae_dev); } |