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: Bjørn Mork <bjorn@mork.no> Acked-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -620,10 +620,12 @@ static int wdm_release(struct inode *inode, struct file *file)
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if (!desc->count) {
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dev_dbg(&desc->intf->dev, "wdm_release: cleanup");
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kill_urbs(desc);
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if (!test_bit(WDM_DISCONNECTING, &desc->flags))
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if (!test_bit(WDM_DISCONNECTING, &desc->flags)) {
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desc->manage_power(desc->intf, 0);
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else
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} else {
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dev_dbg(&desc->intf->dev, "%s: device gone - cleaning up\n", __func__);
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cleanup(desc);
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}
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}
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mutex_unlock(&wdm_mutex);
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return 0;
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@ -897,6 +899,8 @@ static void wdm_disconnect(struct usb_interface *intf)
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mutex_unlock(&desc->rlock);
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if (!desc->count)
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cleanup(desc);
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else
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dev_dbg(&intf->dev, "%s: %d open files - postponing cleanup\n", __func__, desc->count);
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mutex_unlock(&wdm_mutex);
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}
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