Messages in this thread | | | From | Ondrej Zary <> | Subject | Re: [PATCH] net: 3com: 3c59x: Change the conditional processing for vortex_ioctl | Date | Thu, 17 Mar 2022 09:00:36 +0100 |
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On Thursday 17 March 2022, Meng Tang wrote: > In the vortex_ioctl, there are two places where there can be better > and easier to understand: > First, it should be better to reverse the check on 'VORTEX_PCI(vp)' > and returned early in order to be easier to understand. > Second, no need to make two 'if(state != 0)' judgments, we can > simplify the execution process.
Congratulations, you've just added 3 lines of code and broke a driver. Your "simplified" version does not work with EISA devices.
Why? Please stop "improving" drivers if you can't test them.
> Signed-off-by: Meng Tang <tangmeng@uniontech.com> > --- > drivers/net/ethernet/3com/3c59x.c | 15 +++++++++------ > 1 file changed, 9 insertions(+), 6 deletions(-) > > diff --git a/drivers/net/ethernet/3com/3c59x.c b/drivers/net/ethernet/3com/3c59x.c > index ccf07667aa5e..c22de3c8cd12 100644 > --- a/drivers/net/ethernet/3com/3c59x.c > +++ b/drivers/net/ethernet/3com/3c59x.c > @@ -3032,16 +3032,19 @@ static int vortex_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) > struct vortex_private *vp = netdev_priv(dev); > pci_power_t state = 0; > > - if(VORTEX_PCI(vp)) > - state = VORTEX_PCI(vp)->current_state; > + if (!VORTEX_PCI(vp)) > + return -EOPNOTSUPP; > > - /* The kernel core really should have pci_get_power_state() */ > + state = VORTEX_PCI(vp)->current_state; > > - if(state != 0) > + /* The kernel core really should have pci_get_power_state() */ > + if (!state) { > + err = generic_mii_ioctl(&vp->mii, if_mii(rq), cmd, NULL); > + } else { > pci_set_power_state(VORTEX_PCI(vp), PCI_D0); > - err = generic_mii_ioctl(&vp->mii, if_mii(rq), cmd, NULL); > - if(state != 0) > + err = generic_mii_ioctl(&vp->mii, if_mii(rq), cmd, NULL); > pci_set_power_state(VORTEX_PCI(vp), state); > + } > > return err; > }
-- Ondrej Zary
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