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Commit 880bca3a authored by Bjørn Mork's avatar Bjørn Mork Committed by Greg Kroah-Hartman
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USB: cdc-wdm: add debug messages on cleanup 



Device state cleanup is done in either wdm_disconnect or
wdm_release depending on the order they are called. Adding
a couple of debug messages to document the program flow.

Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
Acked-by: default avatarOliver Neukum <oneukum@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 007bab91

drivers/usb/class/cdc-wdm.c

+6 −2
Original line number Diff line number Diff line
@@ -620,11 +620,13 @@ static int wdm_release(struct inode *inode, struct file *file) 
	if (!desc->count) {

		dev_dbg(&desc->intf->dev, "wdm_release: cleanup");

		kill_urbs(desc);

		if (!test_bit(WDM_DISCONNECTING, &desc->flags))

		if (!test_bit(WDM_DISCONNECTING, &desc->flags)) {

			desc->manage_power(desc->intf, 0);

		else

		} else {

			dev_dbg(&desc->intf->dev, "%s: device gone - cleaning up\n", __func__);

			cleanup(desc);

		}

	}

	mutex_unlock(&wdm_mutex);

	return 0;

}
@@ -897,6 +899,8 @@ static void wdm_disconnect(struct usb_interface *intf) 
	mutex_unlock(&desc->rlock);

	if (!desc->count)

		cleanup(desc);

	else

		dev_dbg(&intf->dev, "%s: %d open files - postponing cleanup\n", __func__, desc->count);

	mutex_unlock(&wdm_mutex);

}