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* [Xen-devel] [PATCH net-next] xen-netfront: mark expected switch fall-through
@ 2019-04-15 21:11 ` Gustavo A. R. Silva
  0 siblings, 0 replies; 14+ messages in thread
From: Gustavo A. R. Silva @ 2019-04-15 21:11 UTC (permalink / raw)
  To: Boris Ostrovsky, Juergen Gross, Stefano Stabellini,
	David S. Miller
  Cc: xen-devel, Gustavo A. R. Silva, linux-kernel, Kees Cook, netdev

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

This patch fixes the following warning:

drivers/net/xen-netfront.c: In function ‘netback_changed’:
drivers/net/xen-netfront.c:2038:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (dev->state == XenbusStateClosed)
      ^
drivers/net/xen-netfront.c:2041:2: note: here
  case XenbusStateClosing:
  ^~~~

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
-Wimplicit-fallthrough.

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

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 80c30321de41..8d33970a2950 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -2037,7 +2037,7 @@ static void netback_changed(struct xenbus_device *dev,
 	case XenbusStateClosed:
 		if (dev->state == XenbusStateClosed)
 			break;
-		/* Missed the backend's CLOSING state -- fallthrough */
+		/* Fall through - Missed the backend's CLOSING state. */
 	case XenbusStateClosing:
 		xenbus_frontend_closed(dev);
 		break;
-- 
2.21.0


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^ permalink raw reply related	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2019-04-24 18:50 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-04-15 21:11 [Xen-devel] [PATCH net-next] xen-netfront: mark expected switch fall-through Gustavo A. R. Silva
2019-04-15 21:11 ` Gustavo A. R. Silva
2019-04-16  7:17 ` [Xen-devel] " Juergen Gross
2019-04-16  7:17   ` Juergen Gross
2019-04-16 14:52   ` [Xen-devel] " Gustavo A. R. Silva
2019-04-16 14:52     ` Gustavo A. R. Silva
2019-04-16 14:52   ` Gustavo A. R. Silva
2019-04-16  7:17 ` Juergen Gross
2019-04-17  4:03 ` David Miller
2019-04-17  4:03 ` [Xen-devel] " David Miller
2019-04-17  4:03   ` David Miller
2019-04-24 18:49 ` Boris Ostrovsky
2019-04-24 18:49 ` [Xen-devel] " Boris Ostrovsky
2019-04-24 18:49   ` Boris Ostrovsky

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