Turns out that we have some const pointers being passed to
to_usb_device_driver() but were not catching this. Change the macro to
properly propagate the const-ness of the pointer so that we will notice
when we try to write to memory that we shouldn't be writing to.
This requires fixing up the usb_driver_applicable() function as well,
because it can handle a const * to struct usb_driver.
Cc: Johan Hovold <johan@xxxxxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Cc: Grant Grundler <grundler@xxxxxxxxxxxx>
Cc: Yajun Deng <yajun.deng@xxxxxxxxx>
Cc: Oliver Neukum <oneukum@xxxxxxxx>
Cc: Douglas Anderson <dianders@xxxxxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/core/driver.c | 4 ++--
drivers/usb/core/usb.h | 2 +-
include/linux/usb.h | 3 +--
3 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index c985a272e552..d0fb2f315d65 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -840,7 +840,7 @@ const struct usb_device_id *usb_device_match_id(struct usb_device *udev,
EXPORT_SYMBOL_GPL(usb_device_match_id);
bool usb_driver_applicable(struct usb_device *udev,
- struct usb_device_driver *udrv)
+ const struct usb_device_driver *udrv)
{
if (udrv->id_table && udrv->match)
return usb_device_match_id(udev, udrv->id_table) != NULL &&
@@ -860,7 +860,7 @@ static int usb_device_match(struct device *dev, const struct device_driver *drv)
/* devices and interfaces are handled separately */
if (is_usb_device(dev)) {
struct usb_device *udev;
- struct usb_device_driver *udrv;
+ const struct usb_device_driver *udrv;
/* interface drivers never match devices */
if (!is_usb_device_driver(drv))
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index b8324ea05b20..a9b37aeb515b 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -75,7 +75,7 @@ extern int usb_match_device(struct usb_device *dev,
extern const struct usb_device_id *usb_device_match_id(struct usb_device *udev,
const struct usb_device_id *id);
extern bool usb_driver_applicable(struct usb_device *udev,
- struct usb_device_driver *udrv);
+ const struct usb_device_driver *udrv);
extern void usb_forced_unbind_intf(struct usb_interface *intf);
extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev);
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 4390426973f4..5c619e8240fe 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1283,8 +1283,7 @@ struct usb_device_driver {
unsigned int supports_autosuspend:1;
unsigned int generic_subclass:1;
};
-#define to_usb_device_driver(d) container_of(d, struct usb_device_driver, \
- driver)
+#define to_usb_device_driver(d) container_of_const(d, struct usb_device_driver, driver)
/**
* struct usb_class_driver - identifies a USB driver that wants to use the USB major number
--
2.45.2
