USB: Also match device drivers using the ->match vfunc

We only ever used the ID table matching before, but we should also support
open-coded match functions.

Fixes: 88b7381a939de ("USB: Select better matching USB drivers when available")
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20200818110445.509668-1-hadess@hadess.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index b6f2d4b..2b2f1ab 100644 (file)
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -205,8 +205,9 @@ static int __check_usb_generic(struct device_driver *drv, void *data)
        udrv = to_usb_device_driver(drv);
        if (udrv == &usb_generic_driver)
                return 0;
-
-       return usb_device_match_id(udev, udrv->id_table) != NULL;
+       if (usb_device_match_id(udev, udrv->id_table) != NULL)
+               return 1;
+       return (udrv->match && udrv->match(udev));
 }
 
 static bool usb_generic_driver_match(struct usb_device *udev)