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SubjectRe: [PATCH 4.4 234/268] enic: enable rq before updating rq descriptors
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On Mon, 2018-06-18 at 00:06 +0100, Ben Hutchings wrote:
> On Mon, 2018-05-28 at 12:03 +0200, Greg Kroah-Hartman wrote:
> > 4.4-stable review patch. If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: Govindarajulu Varadarajan <gvaradar@cisco.com>
> >
> > [ Upstream commit e8588e268509292550634d9a35f2723a207683b2 ]
>
> [...]
> > --- a/drivers/net/ethernet/cisco/enic/enic_main.c
> > +++ b/drivers/net/ethernet/cisco/enic/enic_main.c
>
> [...]
> > @@ -1765,8 +1765,12 @@ static int enic_open(struct net_device *
> > > return 0;
> >
> >
> > err_out_free_rq:
> > - for (i = 0; i < enic->rq_count; i++)
> > + for (i = 0; i < enic->rq_count; i++) {
> > + err = vnic_rq_disable(&enic->rq[i]);
> > + if (err)
> > + return err;
>
> This added code is wrong: it overwrites the error code that was
> previously in err. If vnic_rq_disable() succeeds, enic_open() will
> wrongly return 0. If vnic_rq_disable() fails, I still don't think it
> makes sense to skip the remaining cleanup actins.

Good catch. Fixing it.
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