From: Gu Zheng <guz.fnst@cn.fujitsu.com>
Date: Sat, 25 May 2013 13:48:30 +0000 (+0800)
Subject: PCI: Introduce pci_alloc_dev(struct pci_bus*) to replace alloc_pci_dev()
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~18^2~2^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3c6e6ae770f338ef3e54c5823c21063204f53537;p=pandora-kernel.git

PCI: Introduce pci_alloc_dev(struct pci_bus*) to replace alloc_pci_dev()

Here we introduce a new interface to replace alloc_pci_dev():

    struct pci_dev *pci_alloc_dev(struct pci_bus *bus)

It takes a "struct pci_bus *" argument, so we can alloc a PCI device
on a target PCI bus, and it acquires a reference on the pci_bus.
We use pci_alloc_dev(NULL) to simplify the old alloc_pci_dev(),
and keep it for a while but mark it as __deprecated.

Holding a reference to the pci_bus ensures that referencing
pci_dev->bus is valid as long as the pci_dev is valid.

[bhelgaas: keep existing "return error early" structure in pci_alloc_dev()]
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---

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