@@ -850,7 +850,7 @@ 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 &&
@@ -870,7 +870,7 @@ 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))
@@ -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);
@@ -1294,8 +1294,7 @@ 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
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@kernel.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Grant Grundler <grundler@chromium.org> Cc: Yajun Deng <yajun.deng@linux.dev> Cc: Oliver Neukum <oneukum@suse.com> Cc: Douglas Anderson <dianders@chromium.org> Cc: linux-usb@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- v2: reordered patches, goes on top of series submitted at https://lore.kernel.org/r/2024111322-kindly-finalist-d247@gregkh drivers/usb/core/driver.c | 4 ++-- drivers/usb/core/usb.h | 2 +- include/linux/usb.h | 3 +-- 3 files changed, 4 insertions(+), 5 deletions(-)