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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>
alistair/sunxi64-5.8
Mark Starovoytov 2020-04-30 11:04:34 +03:00 committed by David S. Miller
parent 36e90a5297
commit d0f23741c2
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/aquantia/atlantic/aq_nic.c
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@ -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;
}