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path: root/drivers/pci/pci-driver.c
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Diffstat (limited to 'drivers/pci/pci-driver.c')
-rw-r--r--drivers/pci/pci-driver.c58
1 files changed, 48 insertions, 10 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index d911e0c1f359..837d71f5390b 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -107,7 +107,7 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
subdevice=PCI_ANY_ID, class=0, class_mask=0;
unsigned long driver_data=0;
int fields=0;
- int retval;
+ int retval = 0;
fields = sscanf(buf, "%x %x %x %x %x %x %lx",
&vendor, &device, &subvendor, &subdevice,
@@ -115,6 +115,26 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
if (fields < 2)
return -EINVAL;
+ if (fields != 7) {
+ struct pci_dev *pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
+ if (!pdev)
+ return -ENOMEM;
+
+ pdev->vendor = vendor;
+ pdev->device = device;
+ pdev->subsystem_vendor = subvendor;
+ pdev->subsystem_device = subdevice;
+ pdev->class = class;
+
+ if (pci_match_id(pdrv->id_table, pdev))
+ retval = -EEXIST;
+
+ kfree(pdev);
+
+ if (retval)
+ return retval;
+ }
+
/* Only accept driver_data values that match an existing id_table
entry */
if (ids) {
@@ -216,6 +236,13 @@ const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
return NULL;
}
+static const struct pci_device_id pci_device_id_any = {
+ .vendor = PCI_ANY_ID,
+ .device = PCI_ANY_ID,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+};
+
/**
* pci_match_device - Tell if a PCI device structure has a matching PCI device id structure
* @drv: the PCI driver to match against
@@ -229,18 +256,30 @@ static const struct pci_device_id *pci_match_device(struct pci_driver *drv,
struct pci_dev *dev)
{
struct pci_dynid *dynid;
+ const struct pci_device_id *found_id = NULL;
+
+ /* When driver_override is set, only bind to the matching driver */
+ if (dev->driver_override && strcmp(dev->driver_override, drv->name))
+ return NULL;
/* Look at the dynamic ids first, before the static ones */
spin_lock(&drv->dynids.lock);
list_for_each_entry(dynid, &drv->dynids.list, node) {
if (pci_match_one_device(&dynid->id, dev)) {
- spin_unlock(&drv->dynids.lock);
- return &dynid->id;
+ found_id = &dynid->id;
+ break;
}
}
spin_unlock(&drv->dynids.lock);
- return pci_match_id(drv->id_table, dev);
+ if (!found_id)
+ found_id = pci_match_id(drv->id_table, dev);
+
+ /* driver_override will always match, send a dummy id */
+ if (!found_id && dev->driver_override)
+ found_id = &pci_device_id_any;
+
+ return found_id;
}
struct drv_dev_and_id {
@@ -580,14 +619,14 @@ static void pci_pm_default_resume(struct pci_dev *pci_dev)
{
pci_fixup_device(pci_fixup_resume, pci_dev);
- if (!pci_is_bridge(pci_dev))
+ if (!pci_has_subordinate(pci_dev))
pci_enable_wake(pci_dev, PCI_D0, false);
}
static void pci_pm_default_suspend(struct pci_dev *pci_dev)
{
/* Disable non-bridge devices without PM support */
- if (!pci_is_bridge(pci_dev))
+ if (!pci_has_subordinate(pci_dev))
pci_disable_enabled_device(pci_dev);
}
@@ -717,7 +756,7 @@ static int pci_pm_suspend_noirq(struct device *dev)
if (!pci_dev->state_saved) {
pci_save_state(pci_dev);
- if (!pci_is_bridge(pci_dev))
+ if (!pci_has_subordinate(pci_dev))
pci_prepare_to_sleep(pci_dev);
}
@@ -971,7 +1010,7 @@ static int pci_pm_poweroff_noirq(struct device *dev)
return error;
}
- if (!pci_dev->state_saved && !pci_is_bridge(pci_dev))
+ if (!pci_dev->state_saved && !pci_has_subordinate(pci_dev))
pci_prepare_to_sleep(pci_dev);
/*
@@ -1325,8 +1364,6 @@ static int pci_uevent(struct device *dev, struct kobj_uevent_env *env)
return -ENODEV;
pdev = to_pci_dev(dev);
- if (!pdev)
- return -ENODEV;
if (add_uevent_var(env, "PCI_CLASS=%04X", pdev->class))
return -ENOMEM;
@@ -1347,6 +1384,7 @@ static int pci_uevent(struct device *dev, struct kobj_uevent_env *env)
(u8)(pdev->class >> 16), (u8)(pdev->class >> 8),
(u8)(pdev->class)))
return -ENOMEM;
+
return 0;
}