diff options
Diffstat (limited to 'drivers/pci/pci-driver.c')
| -rw-r--r-- | drivers/pci/pci-driver.c | 53 |
1 files changed, 24 insertions, 29 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 2761ab86490d..3da121cb8cbf 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -319,12 +319,10 @@ static long local_pci_probe(void *_ddi) * its remove routine. */ pm_runtime_get_sync(dev); - pci_dev->driver = pci_drv; rc = pci_drv->probe(pci_dev, ddi->id); if (!rc) return rc; if (rc < 0) { - pci_dev->driver = NULL; pm_runtime_put_sync(dev); return rc; } @@ -390,14 +388,13 @@ static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev, * @pci_dev: PCI device being probed * * returns 0 on success, else error. - * side-effect: pci_dev->driver is set to drv when drv claims pci_dev. */ static int __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev) { const struct pci_device_id *id; int error = 0; - if (!pci_dev->driver && drv->probe) { + if (drv->probe) { error = -ENODEV; id = pci_match_device(drv, pci_dev); @@ -457,18 +454,15 @@ static int pci_device_probe(struct device *dev) static void pci_device_remove(struct device *dev) { struct pci_dev *pci_dev = to_pci_dev(dev); - struct pci_driver *drv = pci_dev->driver; + struct pci_driver *drv = to_pci_driver(dev->driver); - if (drv) { - if (drv->remove) { - pm_runtime_get_sync(dev); - drv->remove(pci_dev); - pm_runtime_put_noidle(dev); - } - pcibios_free_irq(pci_dev); - pci_dev->driver = NULL; - pci_iov_remove(pci_dev); + if (drv->remove) { + pm_runtime_get_sync(dev); + drv->remove(pci_dev); + pm_runtime_put_noidle(dev); } + pcibios_free_irq(pci_dev); + pci_iov_remove(pci_dev); /* Undo the runtime PM settings in local_pci_probe() */ pm_runtime_put_sync(dev); @@ -495,7 +489,7 @@ static void pci_device_remove(struct device *dev) static void pci_device_shutdown(struct device *dev) { struct pci_dev *pci_dev = to_pci_dev(dev); - struct pci_driver *drv = pci_dev->driver; + struct pci_driver *drv = to_pci_driver(dev->driver); pm_runtime_resume(dev); @@ -591,7 +585,7 @@ static int pci_pm_reenable_device(struct pci_dev *pci_dev) static int pci_legacy_suspend(struct device *dev, pm_message_t state) { struct pci_dev *pci_dev = to_pci_dev(dev); - struct pci_driver *drv = pci_dev->driver; + struct pci_driver *drv = to_pci_driver(dev->driver); if (drv && drv->suspend) { pci_power_t prev = pci_dev->current_state; @@ -632,7 +626,7 @@ static int pci_legacy_suspend_late(struct device *dev, pm_message_t state) static int pci_legacy_resume(struct device *dev) { struct pci_dev *pci_dev = to_pci_dev(dev); - struct pci_driver *drv = pci_dev->driver; + struct pci_driver *drv = to_pci_driver(dev->driver); pci_fixup_device(pci_fixup_resume, pci_dev); @@ -651,7 +645,7 @@ static void pci_pm_default_suspend(struct pci_dev *pci_dev) static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev) { - struct pci_driver *drv = pci_dev->driver; + struct pci_driver *drv = to_pci_driver(pci_dev->dev.driver); bool ret = drv && (drv->suspend || drv->resume); /* @@ -1244,11 +1238,11 @@ static int pci_pm_runtime_suspend(struct device *dev) int error; /* - * If pci_dev->driver is not set (unbound), we leave the device in D0, - * but it may go to D3cold when the bridge above it runtime suspends. - * Save its config space in case that happens. + * If the device has no driver, we leave it in D0, but it may go to + * D3cold when the bridge above it runtime suspends. Save its + * config space in case that happens. */ - if (!pci_dev->driver) { + if (!to_pci_driver(dev->driver)) { pci_save_state(pci_dev); return 0; } @@ -1305,7 +1299,7 @@ static int pci_pm_runtime_resume(struct device *dev) */ pci_restore_standard_config(pci_dev); - if (!pci_dev->driver) + if (!to_pci_driver(dev->driver)) return 0; pci_fixup_device(pci_fixup_resume_early, pci_dev); @@ -1324,14 +1318,13 @@ static int pci_pm_runtime_resume(struct device *dev) static int pci_pm_runtime_idle(struct device *dev) { - struct pci_dev *pci_dev = to_pci_dev(dev); const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; /* - * If pci_dev->driver is not set (unbound), the device should - * always remain in D0 regardless of the runtime PM status + * If the device has no driver, it should always remain in D0 + * regardless of the runtime PM status */ - if (!pci_dev->driver) + if (!to_pci_driver(dev->driver)) return 0; if (!pm) @@ -1438,8 +1431,10 @@ static struct pci_driver pci_compat_driver = { */ struct pci_driver *pci_dev_driver(const struct pci_dev *dev) { - if (dev->driver) - return dev->driver; + struct pci_driver *drv = to_pci_driver(dev->dev.driver); + + if (drv) + return drv; else { int i; for (i = 0; i <= PCI_ROM_RESOURCE; i++) |