From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Linux PCI <linux-pci@vger.kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Christoph Hellwig <hch@infradead.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>
Subject: Re: [RFC 08/15] x86: PCI: clean up pcibios_scan_root()
Date: Mon, 20 Aug 2018 13:26:39 +0200 [thread overview]
Message-ID: <CAJZ5v0htQ0KZ8M1BpE7H7weRS89jJWPtA0xvgAUmN53jx5DSYg@mail.gmail.com> (raw)
In-Reply-To: <CAK8P3a1KWn0=xwrqZ+sF27O-WE6paDxQPg6PPZFcgCrgXGaX2A@mail.gmail.com>
On Mon, Aug 20, 2018 at 1:17 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Mon, Aug 20, 2018 at 10:31 AM Rafael J. Wysocki <rafael@kernel.org> wrote:
> > On Fri, Aug 17, 2018 at 12:32 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> > > -static struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
> > > - struct pci_ops *ops, void *sysdata, struct list_head *resources)
> > > +void pcibios_scan_root(int busnum)
> > > {
> > > + struct pci_sysdata *sd;
> > > struct pci_host_bridge *bridge;
> > > int error;
> > >
> > > - bridge = pci_alloc_host_bridge(0);
> > > - if (!bridge)
> > > - return NULL;
> > > + bridge = pci_alloc_host_bridge(sizeof(sd));
> > > + if (!bridge) {
> > > + printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busnum);
> > > + return;
> > > + }
> > > + sd = pci_host_bridge_priv(bridge);
> >
> > This looks fishy, as bridge->private is not set at this point AFAICS,
> > unless one of the previous patches changes that.
>
> bridge->private what comes after the bridge structure, and it's allocated
> by pci_alloc_host_bridge() passing the size of the structure we want
> for this private area.
I see, sorry for the noise.
next prev parent reply other threads:[~2018-08-20 11:26 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-17 10:26 [RFC 00/15] PCI: turn some __weak functions into callbacks Arnd Bergmann
2018-08-17 10:26 ` [RFC 01/15] PCI: clean up legacy host bridge scan functions Arnd Bergmann
2018-08-17 10:26 ` [RFC 02/15] PCI: move pci_scan_bus into callers Arnd Bergmann
2018-08-17 10:26 ` [RFC 03/15] PCI: move pci_scan_root_bus " Arnd Bergmann
2018-08-17 10:26 ` [RFC 04/15] PCI: export pci_register_host_bridge Arnd Bergmann
2018-08-17 10:26 ` [RFC 05/15] PCI: move pci_create_root_bus into callers Arnd Bergmann
2018-08-17 10:26 ` [RFC 06/15] powerpc/pci: fold pci_create_root_bus into pcibios_scan_phb Arnd Bergmann
2018-08-17 10:26 ` [RFC 07/15] PCI/ACPI: clean up acpi_pci_root_create() Arnd Bergmann
2018-08-20 8:23 ` Rafael J. Wysocki
2018-08-20 11:19 ` Arnd Bergmann
2018-08-20 11:24 ` Rafael J. Wysocki
2018-08-20 11:36 ` Arnd Bergmann
2018-08-17 10:26 ` [RFC 08/15] x86: PCI: clean up pcibios_scan_root() Arnd Bergmann
2018-08-20 8:31 ` Rafael J. Wysocki
2018-08-20 11:16 ` Arnd Bergmann
2018-08-20 11:26 ` Rafael J. Wysocki [this message]
2018-08-17 10:26 ` [RFC 09/15] PCI: xenfront: clean up pcifront_scan_root() Arnd Bergmann
2018-08-17 10:26 ` [RFC 10/15] sparc/PCI: simplify pci_scan_one_pbm Arnd Bergmann
2018-08-17 10:26 ` [RFC 11/15] PCI: hyperv: convert to pci_scan_root_bus_bridge Arnd Bergmann
2018-08-17 10:26 ` [RFC 12/15] PCI: make pcibios_bus_add_device() a callback function Arnd Bergmann
2018-08-17 10:26 ` [RFC 13/15] PCI: turn pcibios_alloc_irq into a callback Arnd Bergmann
2018-08-17 10:26 ` [RFC 14/15] PCI: make pcibios_root_bridge_prepare " Arnd Bergmann
2018-08-17 10:26 ` [RFC 15/15] PCI: make pcibios_add_bus/remove_bus callbacks Arnd Bergmann
2018-08-21 6:14 ` [RFC 00/15] PCI: turn some __weak functions into callbacks Christoph Hellwig
2018-08-21 10:07 ` Arnd Bergmann
2018-08-21 11:30 ` David Woodhouse
2018-08-21 13:14 ` Christoph Hellwig
2018-10-02 20:59 ` Bjorn Helgaas
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