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xen/pvcalls-front: mark expected switch fall-through

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In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that in this particular case I placed the "fall through" comment
on its own line, which is what GCC is expecting to find.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This commit is contained in:
Gustavo A. R. Silva 2017-11-02 13:51:22 -05:00 committed by Boris Ostrovsky
parent 5fa916f7ac
commit 3d8765d4f5
1 changed files with 2 additions and 1 deletions
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3
drivers/xen/pvcalls-front.c
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@ -1250,7 +1250,8 @@ static void pvcalls_front_changed(struct xenbus_device *dev,
case XenbusStateClosed:
if (dev->state == XenbusStateClosed)
break;
/* Missed the backend's CLOSING state -- fallthrough */
/* Missed the backend's CLOSING state */
/* fall through */
case XenbusStateClosing:
xenbus_frontend_closed(dev);
break;