On Sun, Jan 28, 2018 at 03:25:58PM +0200, Yuval Shaia wrote:
> On Sun, Jan 28, 2018 at 02:52:08PM +0200, Leon Romanovsky wrote:
> > On Sun, Jan 28, 2018 at 01:07:18PM +0200, Yuval Shaia wrote:
> > > On Sun, Jan 28, 2018 at 11:25:30AM +0200, Leon Romanovsky wrote:
> > > > From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> > > >
> > > > Failure in XRCD FW deallocation command leaves memory leaked and
> > > > returns error to the user which he can't do anything about it.
> > > >
> > > > This patch changes behavior to always free memory and always return
> > > > success to the user.
> > > >
> > > > Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
> > > > Reviewed-by: Majd Dibbiny <majd@xxxxxxxxxxxx>
> > > > Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> > > > ---
> > > > drivers/infiniband/hw/mlx5/qp.c | 5 +----
> > > > 1 file changed, 1 insertion(+), 4 deletions(-)
> > > >
> > > > diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
> > > > index b06a2f9a8df4..39d24bf694a8 100644
> > > > --- a/drivers/infiniband/hw/mlx5/qp.c
> > > > +++ b/drivers/infiniband/hw/mlx5/qp.c
> > > > @@ -5066,13 +5066,10 @@ int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
> > > > int err;
> > > >
> > > > err = mlx5_core_xrcd_dealloc(dev->mdev, xrcdn);
> > > > - if (err) {
> > > > + if (err)
> > > > mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
> > > > - return err;
> > > > - }
> > > >
> > > > kfree(xrcd);
> > > > -
> > > > return 0;
> > >
> > > In this case suggesting to make the function return void.
> >
> > It is part of global flow:
> > ib_uverbs_dealloc_xrcd -> ib_dealloc_xrcd -> xrcd->device->dealloc_xrcd
>
> I see, missed that code path.
>
> But for my understanding, as of now - all implementations of this hook
> (two) returns 0 always, right?
Right, both mlx4 and mlx5 always return 0, and it is related to mistake
in verbs API - various free and destroy functions return errors without
actual need for it.
>
> Reviewed-by: Yuval Shaia <yuval.shaia@xxxxxxxxxx>
Thanks
>
> >
> > >
> > > > }
> > > >
> > > > --
> > > > 2.16.1
> > > >
> > > > --
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>
>
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