From: Niklas Schnelle <schnelle@linux.ibm.com>
To: Pierre Morel <pmorel@linux.ibm.com>,
Matthew Rosato <mjrosato@linux.ibm.com>,
iommu@lists.linux.dev
Cc: linux-s390@vger.kernel.org, borntraeger@linux.ibm.com,
hca@linux.ibm.com, gor@linux.ibm.com,
gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com,
svens@linux.ibm.com, joro@8bytes.org, will@kernel.org,
robin.murphy@arm.com, jgg@nvidia.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/3] s390/pci: remove unused bus_next field from struct zpci_dev
Date: Mon, 26 Sep 2022 15:41:24 +0200 [thread overview]
Message-ID: <68397430eab0fee46d8c61b8a8d6c2ecd27447d4.camel@linux.ibm.com> (raw)
In-Reply-To: <8ba5cee2-5e5c-6b73-3ac7-56e78e432698@linux.ibm.com>
On Mon, 2022-09-26 at 11:23 +0200, Pierre Morel wrote:
>
> On 9/26/22 11:17, Pierre Morel wrote:
> >
> > On 9/22/22 11:52, Niklas Schnelle wrote:
> > > This field was added in commit 44510d6fa0c0 ("s390/pci: Handling
> > > multifunctions") but is an unused remnant of an earlier version where
> > > the devices on the virtual bus were connected in a linked list instead
> > > of a fixed 256 entry array of pointers.
> > >
> > > It is also not used for the list of busses as that is threaded through
> > > struct zpci_bus not through struct zpci_dev.
> > >
> > > Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
> >
> > Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
> >
> >
>
> Also couldn't it be detached of the series and posted on its own?
As this is entirely s390 specific this can go via the s390 tree without
re-posting. Since we're still figuring the rest of the series out it
might even make it upstream before that and then we can more easily
refer to it as a pre-requisite.
>
> > > ---
> > > arch/s390/include/asm/pci.h | 1 -
> > > 1 file changed, 1 deletion(-)
> > >
> > > diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
> > > index 7b4cdadbc023..108e732d7b14 100644
> > > --- a/arch/s390/include/asm/pci.h
> > > +++ b/arch/s390/include/asm/pci.h
> > > @@ -117,7 +117,6 @@ struct zpci_bus {
> > > struct zpci_dev {
> > > struct zpci_bus *zbus;
> > > struct list_head entry; /* list of all zpci_devices,
> > > needed for hotplug, etc. */
> > > - struct list_head bus_next;
> > > struct kref kref;
> > > struct hotplug_slot hotplug_slot;
next prev parent reply other threads:[~2022-09-26 13:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-22 9:52 [PATCH v2 0/3] iommu/s390: Fixes related to repeat attach_dev calls Niklas Schnelle
2022-09-22 9:52 ` [PATCH v2 1/3] iommu/s390: Fix duplicate domain attachments Niklas Schnelle
2022-09-22 14:33 ` Jason Gunthorpe
2022-09-26 9:00 ` Niklas Schnelle
2022-09-26 13:46 ` Jason Gunthorpe
2022-09-27 16:33 ` Niklas Schnelle
2022-09-27 16:56 ` Jason Gunthorpe
2022-09-28 8:58 ` Niklas Schnelle
2022-09-28 13:32 ` Jason Gunthorpe
2022-09-29 7:47 ` Niklas Schnelle
2022-09-26 13:29 ` Niklas Schnelle
2022-09-26 13:51 ` Jason Gunthorpe
2022-09-27 16:24 ` Niklas Schnelle
2022-09-27 16:40 ` Jason Gunthorpe
2022-09-22 9:52 ` [PATCH v2 2/3] s390/pci: remove unused bus_next field from struct zpci_dev Niklas Schnelle
2022-09-26 9:17 ` Pierre Morel
2022-09-26 9:23 ` Pierre Morel
2022-09-26 13:41 ` Niklas Schnelle [this message]
2022-09-22 9:52 ` [PATCH v2 3/3] iommu/s390: Get rid of s390_domain_device Niklas Schnelle
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