diff options
Diffstat (limited to 'drivers/pci/pci-driver.c')
| -rw-r--r-- | drivers/pci/pci-driver.c | 56 |
1 files changed, 49 insertions, 7 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index e4115a0d5ba6..ae986e590b48 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -7,6 +7,9 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/device.h> +#include <linux/mempolicy.h> +#include <linux/string.h> +#include <linux/slab.h> #include "pci.h" /* @@ -25,7 +28,10 @@ struct pci_dynid { #ifdef CONFIG_HOTPLUG /** - * store_new_id + * store_new_id - add a new PCI device ID to this driver and re-probe devices + * @driver: target device driver + * @buf: buffer for scanning device ID data + * @count: input size * * Adds a new dynamic pci device ID to this driver, * and causes the driver to probe for all devices again. @@ -163,10 +169,40 @@ const struct pci_device_id *pci_match_device(struct pci_driver *drv, return NULL; } +static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev, + const struct pci_device_id *id) +{ + int error; +#ifdef CONFIG_NUMA + /* Execute driver initialization on node where the + device's bus is attached to. This way the driver likely + allocates its local memory on the right node without + any need to change it. */ + struct mempolicy *oldpol; + cpumask_t oldmask = current->cpus_allowed; + int node = pcibus_to_node(dev->bus); + if (node >= 0 && node_online(node)) + set_cpus_allowed(current, node_to_cpumask(node)); + /* And set default memory allocation policy */ + oldpol = current->mempolicy; + current->mempolicy = &default_policy; + mpol_get(current->mempolicy); +#endif + error = drv->probe(dev, id); +#ifdef CONFIG_NUMA + set_cpus_allowed(current, oldmask); + mpol_free(current->mempolicy); + current->mempolicy = oldpol; +#endif + return error; +} + /** * __pci_device_probe() + * @drv: driver to call to check if it wants the PCI device + * @pci_dev: PCI device being probed * - * returns 0 on success, else error. + * returns 0 on success, else error. * side-effect: pci_dev->driver is set to drv when drv claims pci_dev. */ static int @@ -180,7 +216,7 @@ __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev) id = pci_match_device(drv, pci_dev); if (id) - error = drv->probe(pci_dev, id); + error = pci_call_probe(drv, pci_dev, id); if (error >= 0) { pci_dev->driver = drv; error = 0; @@ -243,17 +279,19 @@ static int pci_device_suspend(struct device * dev, pm_message_t state) } -/* +/* * Default resume method for devices that have no driver provided resume, * or not even a driver at all. */ static void pci_default_resume(struct pci_dev *pci_dev) { + int retval; + /* restore the PCI config space */ pci_restore_state(pci_dev); /* if the device was enabled before suspend, reenable */ if (pci_dev->is_enabled) - pci_enable_device(pci_dev); + retval = pci_enable_device(pci_dev); /* if the device was busmaster before the suspend, make it busmaster again */ if (pci_dev->is_busmaster) pci_set_master(pci_dev); @@ -346,6 +384,10 @@ int pci_register_driver(struct pci_driver *drv) * the pci shutdown function, this test can go away. */ if (!drv->driver.shutdown) drv->driver.shutdown = pci_device_shutdown; + else + printk(KERN_WARNING "Warning: PCI driver %s has a struct " + "device_driver shutdown method, please update!\n", + drv->name); drv->driver.owner = drv->owner; drv->driver.kobj.ktype = &pci_driver_kobj_type; @@ -405,11 +447,11 @@ pci_dev_driver(const struct pci_dev *dev) /** * pci_bus_match - Tell if a PCI device structure has a matching PCI device id structure - * @ids: array of PCI device id structures to search in * @dev: the PCI device structure to match against + * @drv: the device driver to search for matching PCI device id structures * * Used by a driver to check whether a PCI device present in the - * system is in its list of supported devices.Returns the matching + * system is in its list of supported devices. Returns the matching * pci_device_id structure or %NULL if there is no match. */ static int pci_bus_match(struct device *dev, struct device_driver *drv) |