usb: xhci: 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/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 2c9f25ca8eddf324282cbff84a554b3887f8ee09..2f4729f4f1e09f78d628d0dca98dfaa7b8889d28 100644 (file)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -103,7 +103,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
        struct xhci_driver_data         *driver_data;
        const struct pci_device_id      *id;
 
-       id = pci_match_id(pdev->driver->id_table, pdev);
+       id = pci_match_id(to_pci_driver(pdev->dev.driver)->id_table, pdev);
 
        if (id && id->driver_data) {
                driver_data = (struct xhci_driver_data *)id->driver_data;