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[Xen-devel] [PATCH] xen-scsiback: mark expected switch fall-through

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

This patch fixes the following warning:

drivers/xen/xen-scsiback.c: In function ‘scsiback_frontend_changed’:
drivers/xen/xen-scsiback.c:1185:6: warning: this statement may fall through 
   if (xenbus_dev_is_online(dev))
drivers/xen/xen-scsiback.c:1188:2: note: here
  case XenbusStateUnknown:

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable

Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
 drivers/xen/xen-scsiback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index e59937293a32..ba0942e481bc 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -1184,7 +1184,7 @@ static void scsiback_frontend_changed(struct 
xenbus_device *dev,
                xenbus_switch_state(dev, XenbusStateClosed);
                if (xenbus_dev_is_online(dev))
-               /* fall through if not online */
+               /* fall through - if not online */
        case XenbusStateUnknown:

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