powerpc/eeh: Use to_pci_driver() instead of pci_dev->driver

Struct pci_driver contains a struct device_driver, so for PCI devices, it's
easy to convert a device_driver * to a pci_driver * with to_pci_driver().
The device_driver * is in struct device, so we don't need to also keep
track of the pci_driver * in struct pci_dev.

Replace pdev->driver with to_pci_driver().  This is a step toward removing
pci_dev->driver.

[bhelgaas: split to separate patch]
Link: https://lore.kernel.org/r/20211004125935.2300113-11-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 3eff6a4..350dab1 100644 (file)
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -104,13 +104,13 @@ static bool eeh_edev_actionable(struct eeh_dev *edev)
  */
 static inline struct pci_driver *eeh_pcid_get(struct pci_dev *pdev)
 {
-       if (!pdev || !pdev->driver)
+       if (!pdev || !pdev->dev.driver)
                return NULL;
 
-       if (!try_module_get(pdev->driver->driver.owner))
+       if (!try_module_get(pdev->dev.driver->owner))
                return NULL;
 
-       return pdev->driver;
+       return to_pci_driver(pdev->dev.driver);
 }
 
 /**
@@ -122,10 +122,10 @@ static inline struct pci_driver *eeh_pcid_get(struct pci_dev *pdev)
  */
 static inline void eeh_pcid_put(struct pci_dev *pdev)
 {
-       if (!pdev || !pdev->driver)
+       if (!pdev || !pdev->dev.driver)
                return;
 
-       module_put(pdev->driver->driver.owner);
+       module_put(pdev->dev.driver->owner);
 }
 
 /**