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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

Browse source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: clear bridge resource range if BIOS assigned bad one
  PCI: hotplug/cpqphp, fix NULL dereference
  Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/"
  PCI: change resource collision messages from KERN_ERR to KERN_INFO
This commit is contained in:
Linus Torvalds 2010-06-11 14:15:44 -07:00
commit eda054770e
9 changed files with 17 additions and 130 deletions
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40
Documentation/ABI/testing/sysfs-bus-pci
View file

@ -133,46 +133,6 @@ Description:
The symbolic link points to the PCI device sysfs entry of the
Physical Function this device associates with.
What: /sys/bus/pci/slots/...
Date: April 2005 (possibly older)
KernelVersion: 2.6.12 (possibly older)
Contact: linux-pci@vger.kernel.org
Description:
When the appropriate driver is loaded, it will create a
directory per claimed physical PCI slot in
/sys/bus/pci/slots/. The names of these directories are
specific to the driver, which in turn, are specific to the
platform, but in general, should match the label on the
machine's physical chassis.
The drivers that can create slot directories include the
PCI hotplug drivers, and as of 2.6.27, the pci_slot driver.
The slot directories contain, at a minimum, a file named
'address' which contains the PCI bus:device:function tuple.
Other files may appear as well, but are specific to the
driver.
What: /sys/bus/pci/slots/.../function[0-7]
Date: March 2010
KernelVersion: 2.6.35
Contact: linux-pci@vger.kernel.org
Description:
If PCI slot directories (as described above) are created,
and the physical slot is actually populated with a device,
symbolic links in the slot directory pointing to the
device's PCI functions are created as well.
What: /sys/bus/pci/devices/.../slot
Date: March 2010
KernelVersion: 2.6.35
Contact: linux-pci@vger.kernel.org
Description:
If PCI slot directories (as described above) are created,
a symbolic link pointing to the slot directory will be
created as well.
What: /sys/bus/pci/slots/.../module
Date: June 2009
Contact: linux-pci@vger.kernel.org

1
arch/microblaze/pci/pci-common.c
View file

@ -1277,6 +1277,7 @@ void pcibios_allocate_bus_resources(struct pci_bus *bus)
printk(KERN_WARNING "PCI: Cannot allocate resource region "
"%d of PCI bridge %d, will remap\n", i, bus->number);
clear_resource:
res->start = res->end = 0;
res->flags = 0;
}

1
arch/mn10300/unit-asb2305/pci-asb2305.c
View file

@ -117,6 +117,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
* Invalidate the resource to prevent
* child resource allocations in this
* range. */
r->start = r->end = 0;
r->flags = 0;
}
}

1
arch/powerpc/kernel/pci-common.c
View file

@ -1309,6 +1309,7 @@ void pcibios_allocate_bus_resources(struct pci_bus *bus)
printk(KERN_WARNING "PCI: Cannot allocate resource region "
"%d of PCI bridge %d, will remap\n", i, bus->number);
clear_resource:
res->start = res->end = 0;
res->flags = 0;
}

2
arch/x86/pci/i386.c
View file

@ -96,6 +96,7 @@ EXPORT_SYMBOL(pcibios_align_resource);
* the fact the PCI specs explicitly allow address decoders to be
* shared between expansion ROMs and other resource regions, it's
* at least dangerous)
* - bad resource sizes or overlaps with other regions
*
* Our solution:
* (1) Allocate resources for all buses behind PCI-to-PCI bridges.
@ -136,6 +137,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
* child resource allocations in this
* range.
*/
r->start = r->end = 0;
r->flags = 0;
}
}

7
drivers/pci/hotplug/cpqphp_core.c
View file

@ -828,7 +828,14 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
pci_name(pdev), err);
return err;
}
bus = pdev->subordinate;
if (!bus) {
dev_notice(&pdev->dev, "the device is not a bridge, "
"skipping\n");
rc = -ENODEV;
goto err_disable_device;
}
/* Need to read VID early b/c it's used to differentiate CPQ and INTC
* discovery

37
drivers/pci/pci-sysfs.c
View file

@ -1035,39 +1035,6 @@ static int pci_create_capabilities_sysfs(struct pci_dev *dev)
return retval;
}
static void pci_remove_slot_links(struct pci_dev *dev)
{
char func[10];
struct pci_slot *slot;
sysfs_remove_link(&dev->dev.kobj, "slot");
list_for_each_entry(slot, &dev->bus->slots, list) {
if (slot->number != PCI_SLOT(dev->devfn))
continue;
snprintf(func, 10, "function%d", PCI_FUNC(dev->devfn));
sysfs_remove_link(&slot->kobj, func);
}
}
static int pci_create_slot_links(struct pci_dev *dev)
{
int result = 0;
char func[10];
struct pci_slot *slot;
list_for_each_entry(slot, &dev->bus->slots, list) {
if (slot->number != PCI_SLOT(dev->devfn))
continue;
result = sysfs_create_link(&dev->dev.kobj, &slot->kobj, "slot");
if (result)
goto out;
snprintf(func, 10, "function%d", PCI_FUNC(dev->devfn));
result = sysfs_create_link(&slot->kobj, &dev->dev.kobj, func);
}
out:
return result;
}
int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
{
int retval;
@ -1130,8 +1097,6 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
if (retval)
goto err_vga_file;
pci_create_slot_links(pdev);
return 0;
err_vga_file:
@ -1181,8 +1146,6 @@ void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
if (!sysfs_initialized)
return;
pci_remove_slot_links(pdev);
pci_remove_capabilities_sysfs(pdev);
if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)

10
drivers/pci/setup-res.c
View file

@ -97,16 +97,16 @@ int pci_claim_resource(struct pci_dev *dev, int resource)
root = pci_find_parent_resource(dev, res);
if (!root) {
dev_err(&dev->dev, "no compatible bridge window for %pR\n",
res);
dev_info(&dev->dev, "no compatible bridge window for %pR\n",
res);
return -EINVAL;
}
conflict = request_resource_conflict(root, res);
if (conflict) {
dev_err(&dev->dev,
"address space collision: %pR conflicts with %s %pR\n",
res, conflict->name, conflict);
dev_info(&dev->dev,
"address space collision: %pR conflicts with %s %pR\n",
res, conflict->name, conflict);
return -EBUSY;
}

48
drivers/pci/slot.c
View file

@ -97,50 +97,6 @@ static ssize_t cur_speed_read_file(struct pci_slot *slot, char *buf)
return bus_speed_read(slot->bus->cur_bus_speed, buf);
}
static void remove_sysfs_files(struct pci_slot *slot)
{
char func[10];
struct list_head *tmp;
list_for_each(tmp, &slot->bus->devices) {
struct pci_dev *dev = pci_dev_b(tmp);
if (PCI_SLOT(dev->devfn) != slot->number)
continue;
sysfs_remove_link(&dev->dev.kobj, "slot");
snprintf(func, 10, "function%d", PCI_FUNC(dev->devfn));
sysfs_remove_link(&slot->kobj, func);
}
}
static int create_sysfs_files(struct pci_slot *slot)
{
int result;
char func[10];
struct list_head *tmp;
list_for_each(tmp, &slot->bus->devices) {
struct pci_dev *dev = pci_dev_b(tmp);
if (PCI_SLOT(dev->devfn) != slot->number)
continue;
result = sysfs_create_link(&dev->dev.kobj, &slot->kobj, "slot");
if (result)
goto fail;
snprintf(func, 10, "function%d", PCI_FUNC(dev->devfn));
result = sysfs_create_link(&slot->kobj, &dev->dev.kobj, func);
if (result)
goto fail;
}
return 0;
fail:
remove_sysfs_files(slot);
return result;
}
static void pci_slot_release(struct kobject *kobj)
{
struct pci_dev *dev;
@ -153,8 +109,6 @@ static void pci_slot_release(struct kobject *kobj)
if (PCI_SLOT(dev->devfn) == slot->number)
dev->slot = NULL;
remove_sysfs_files(slot);
list_del(&slot->list);
kfree(slot);
@ -346,8 +300,6 @@ struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
INIT_LIST_HEAD(&slot->list);
list_add(&slot->list, &parent->slots);
create_sysfs_files(slot);
list_for_each_entry(dev, &parent->devices, bus_list)
if (PCI_SLOT(dev->devfn) == slot_nr)
dev->slot = slot;