trig: print message on wrong usage of data_done

If the driver call data_done when the trigger was un-armed, then print a debug message. This is useful on driver development. Theoretically, this code should not be compiled if we are not setting -DDEBUG Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

trig: print message on wrong usage of data_done
If the driver call data_done when the trigger was un-armed, then print a debug message. This is useful on driver development. Theoretically, this code should not be compiled if we are not setting -DDEBUG Signed-off-by: Federico Vaga <federico.vaga@gmail.com>
b73e11de · Federico Vaga · 177bf9a8 · b73e11de
Commit b73e11de authored Mar 03, 2015 by Federico Vaga
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helpers.c helpers.c +2 -0

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--- a/helpers.c
+++ b/helpers.c
@@ -194,6 +194,8 @@ static int __zio_trigger_data_done(struct zio_cset *cset)
 	int must_rearm;

 	spin_lock_irqsave(&cset->lock, flags);
+	if (unlikely(!(cset->ti->flags & ZIO_TI_ARMED)))
+		dev_dbg(&cset->head.dev, "data-done: un-armed trigger\n");

 	if (cset->ti->t_op->data_done)
 		must_rearm = cset->ti->t_op->data_done(cset);