>From 888e824c01f9c039622a2ab74c3df3b884fd7b12 Mon Sep 17 00:00:00 2001
From: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
Date: Mon, 22 Apr 2013 19:04:07 +0900
Subject: [PATCH v2 1/4] PCI: Introduce pci_alloc_dev(struct pci_bus*) to replace
alloc_pci_dev()
Now here we introduce a new struct pci_dev *pci_alloc_dev(struct pci_bus *bus) to replace alloc_pci_dev().
It take a "struct pci_bus *" argument, so we can alloc a pci device on a target pci bus, and it acquire
the reference of 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.
Signed-off-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
---
drivers/pci/probe.c | 13 ++++++++++++-
include/linux/pci.h | 4 +++-
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 43ece5d..89db76a 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1201,7 +1201,7 @@ static void pci_release_bus_bridge_dev(struct device *dev)
kfree(bridge);
}
-struct pci_dev *alloc_pci_dev(void)
+struct pci_dev *pci_alloc_dev(struct pci_bus *bus)
{
struct pci_dev *dev;
@@ -1211,8 +1211,19 @@ struct pci_dev *alloc_pci_dev(void)
INIT_LIST_HEAD(&dev->bus_list);
+ if (bus) {
+ get_device(&bus->dev);
+ dev->bus = bus;
+ }
+
return dev;
}
+EXPORT_SYMBOL(pci_alloc_dev);
+
+struct pci_dev *alloc_pci_dev(void)
+{
+ return pci_alloc_dev(NULL);
+}
EXPORT_SYMBOL(alloc_pci_dev);
bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l,
diff --git a/include/linux/pci.h b/include/linux/pci.h
index e73dfa3..6c09949 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -364,7 +364,9 @@ static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
return dev;
}
-struct pci_dev *alloc_pci_dev(void);
+struct pci_dev *pci_alloc_dev(struct pci_bus *bus);
+
+__deprecated struct pci_dev *alloc_pci_dev(void);
#define to_pci_dev(n) container_of(n, struct pci_dev, dev)
#define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
--
1.7.7
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