[PATCH v3] PCI: Convert alloc_pci_dev(void) to pci_alloc_dev(bus) instead

From: Gu Zheng
Date: Tue May 14 2013 - 04:11:07 EST


v3:
Follow Yinghai's correction to release the bus' ref
in pci_setup_device() fail path.

v2:
Follow Bjorn's correction to move pci_bus_put() to
pci_release_dev() instead.

Signed-off-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
---
arch/powerpc/kernel/pci_of_scan.c | 3 +--
arch/sparc/kernel/pci.c | 3 +--
drivers/char/agp/alpha-agp.c | 2 +-
drivers/char/agp/parisc-agp.c | 2 +-
drivers/pci/iov.c | 8 +++++---
drivers/pci/probe.c | 5 +++--
drivers/scsi/megaraid.c | 2 +-
7 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c
index 2a67e9b..24d01c4 100644
--- a/arch/powerpc/kernel/pci_of_scan.c
+++ b/arch/powerpc/kernel/pci_of_scan.c
@@ -128,7 +128,7 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
const char *type;
struct pci_slot *slot;

- dev = alloc_pci_dev();
+ dev = pci_alloc_dev(bus);
if (!dev)
return NULL;
type = of_get_property(node, "device_type", NULL);
@@ -137,7 +137,6 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,

pr_debug(" create device, devfn: %x, type: %s\n", devfn, type);

- dev->bus = bus;
dev->dev.of_node = of_node_get(node);
dev->dev.parent = bus->bridge;
dev->dev.bus = &pci_bus_type;
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index baf4366..e5871fb 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -254,7 +254,7 @@ static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
const char *type;
u32 class;

- dev = alloc_pci_dev();
+ dev = pci_alloc_dev(bus);
if (!dev)
return NULL;

@@ -281,7 +281,6 @@ static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
printk(" create device, devfn: %x, type: %s\n",
devfn, type);

- dev->bus = bus;
dev->sysdata = node;
dev->dev.parent = bus->bridge;
dev->dev.bus = &pci_bus_type;
diff --git a/drivers/char/agp/alpha-agp.c b/drivers/char/agp/alpha-agp.c
index dd84af4..199b8e9 100644
--- a/drivers/char/agp/alpha-agp.c
+++ b/drivers/char/agp/alpha-agp.c
@@ -174,7 +174,7 @@ alpha_core_agp_setup(void)
/*
* Build a fake pci_dev struct
*/
- pdev = alloc_pci_dev();
+ pdev = pci_alloc_dev(NULL);
if (!pdev)
return -ENOMEM;
pdev->vendor = 0xffff;
diff --git a/drivers/char/agp/parisc-agp.c b/drivers/char/agp/parisc-agp.c
index 94821ab..bf5d247 100644
--- a/drivers/char/agp/parisc-agp.c
+++ b/drivers/char/agp/parisc-agp.c
@@ -333,7 +333,7 @@ parisc_agp_setup(void __iomem *ioc_hpa, void __iomem *lba_hpa)
struct agp_bridge_data *bridge;
int error = 0;

- fake_bridge_dev = alloc_pci_dev();
+ fake_bridge_dev = pci_alloc_dev(NULL);
if (!fake_bridge_dev) {
error = -ENOMEM;
goto fail;
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index c93071d..2652ca0 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -75,18 +75,20 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset)
struct pci_dev *virtfn;
struct resource *res;
struct pci_sriov *iov = dev->sriov;
+ struct pci_bus *bus;

- virtfn = alloc_pci_dev();
+ virtfn = pci_alloc_dev(NULL);
if (!virtfn)
return -ENOMEM;

mutex_lock(&iov->dev->sriov->lock);
- virtfn->bus = virtfn_add_bus(dev->bus, virtfn_bus(dev, id));
- if (!virtfn->bus) {
+ bus = virtfn_add_bus(dev->bus, virtfn_bus(dev, id));
+ if (!bus) {
kfree(virtfn);
mutex_unlock(&iov->dev->sriov->lock);
return -ENOMEM;
}
+ virtfn->bus = pci_bus_get(bus);
virtfn->devfn = virtfn_devfn(dev, id);
virtfn->vendor = dev->vendor;
pci_read_config_word(dev, iov->pos + PCI_SRIOV_VF_DID, &virtfn->device);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 70f10fa..db8dadc 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1130,6 +1130,7 @@ static void pci_release_dev(struct device *dev)
struct pci_dev *pci_dev;

pci_dev = to_pci_dev(dev);
+ pci_bus_put(pci_dev->bus);
pci_release_capabilities(pci_dev);
pci_release_of_node(pci_dev);
kfree(pci_dev);
@@ -1263,11 +1264,10 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
if (!pci_bus_read_dev_vendor_id(bus, devfn, &l, 60*1000))
return NULL;

- dev = alloc_pci_dev();
+ dev = pci_alloc_dev(bus);
if (!dev)
return NULL;

- dev->bus = bus;
dev->devfn = devfn;
dev->vendor = l & 0xffff;
dev->device = (l >> 16) & 0xffff;
@@ -1275,6 +1275,7 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
pci_set_of_node(dev);

if (pci_setup_device(dev)) {
+ pci_bus_put(bus);
kfree(dev);
return NULL;
}
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 846f475f..90c95a3 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -2026,7 +2026,7 @@ megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
static inline int
make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
{
- *pdev = alloc_pci_dev();
+ *pdev = pci_alloc_dev(NULL);

if( *pdev == NULL ) return -1;

--
1.7.7


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