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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-08-06 17:44:52 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-08-07 15:05:04 +0300
commit7d9c1d2f7aca2651b3821947bf928ee131df102a (patch)
tree41f47e82cc671e67b79576cf727c70f3be73e7b6
parentb71b283e3d6df40cef03b5ce882b2385971f58a3 (diff)
downloadlinux-7d9c1d2f7aca2651b3821947bf928ee131df102a.tar.xz
USB: add support for dev_groups to struct usb_device_driver
Now that the driver core supports dev_groups for individual drivers, expose that pointer to struct usb_device_driver to make it easier for USB drivers to also use it. Yes, users of usb_device_driver are much rare, but there are instances already that use custom sysfs files, so adding this support will make things easier for those drivers. usbip is one example, hubs might be another one. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190806144502.17792-3-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/core/driver.c1
-rw-r--r--include/linux/usb.h3
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 687fc5df4c17..2b27d232d7a7 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -892,6 +892,7 @@ int usb_register_device_driver(struct usb_device_driver *new_udriver,
new_udriver->drvwrap.driver.probe = usb_probe_device;
new_udriver->drvwrap.driver.remove = usb_unbind_device;
new_udriver->drvwrap.driver.owner = owner;
+ new_udriver->drvwrap.driver.dev_groups = new_udriver->dev_groups;
retval = driver_register(&new_udriver->drvwrap.driver);
diff --git a/include/linux/usb.h b/include/linux/usb.h
index af4eb6419ae8..57f667cad3ec 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1224,6 +1224,8 @@ struct usb_driver {
* module is being unloaded.
* @suspend: Called when the device is going to be suspended by the system.
* @resume: Called when the device is being resumed by the system.
+ * @dev_groups: Attributes attached to the device that will be created once it
+ * is bound to the driver.
* @drvwrap: Driver-model core structure wrapper.
* @supports_autosuspend: if set to 0, the USB core will not allow autosuspend
* for devices bound to this driver.
@@ -1238,6 +1240,7 @@ struct usb_device_driver {
int (*suspend) (struct usb_device *udev, pm_message_t message);
int (*resume) (struct usb_device *udev, pm_message_t message);
+ const struct attribute_group **dev_groups;
struct usbdrv_wrap drvwrap;
unsigned int supports_autosuspend:1;
};