diff options
| author | Mark Starovoytov <mstarovoitov@marvell.com> | 2020-04-30 11:04:34 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-01 15:37:58 -0700 |
| commit | d0f23741c202c685447050713907f3be39a985ee (patch) | |
| tree | ee4a1352caaec18a37e1a0fe1eaecfd29da0ac4a /drivers/net/ethernet/aquantia/atlantic/aq_nic.c | |
| parent | 36e90a5297ea02c67c0f17d8b39eb9ceb93dd6f0 (diff) | |
| download | linux-d0f23741c202c685447050713907f3be39a985ee.tar.bz2 | |
net: atlantic: make hw_get_regs optional
This patch fixes potential crash in case if hw_get_regs is NULL.
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/aquantia/atlantic/aq_nic.c')
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c index 57102f35e9f3..2dbea5cd7684 100644 --- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c +++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c @@ -778,6 +778,9 @@ int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p) u32 *regs_buff = p; int err = 0; + if (unlikely(!self->aq_hw_ops->hw_get_regs)) + return -EOPNOTSUPP; + regs->version = 1; err = self->aq_hw_ops->hw_get_regs(self->aq_hw, @@ -792,6 +795,9 @@ err_exit: int aq_nic_get_regs_count(struct aq_nic_s *self) { + if (unlikely(!self->aq_hw_ops->hw_get_regs)) + return 0; + return self->aq_nic_cfg.aq_hw_caps->mac_regs_count; } |