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[PATCH net-next] net: appletalk: cops: mark expected switch fall-through

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

Notice that, in this particular case, the fall-through annotation
is placed at the beginning of the code comment, which is what
GCC is expecting to find.

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

This patch is part of the ongoing efforts to enabling

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

diff --git a/drivers/net/appletalk/cops.c b/drivers/net/appletalk/cops.c
index f90bb723985f..b3c63d2f16aa 100644
--- a/drivers/net/appletalk/cops.c
+++ b/drivers/net/appletalk/cops.c
@@ -301,7 +301,7 @@ static int __init cops_probe1(struct net_device *dev, int ioaddr)
 			dev->irq = cops_irq(ioaddr, board);
 			if (dev->irq)
-			/* No IRQ found on this port, fallthrough */
+			/* fall through - Once no IRQ found on this port. */
 		case 1:
 			retval = -EINVAL;
 			goto err_out;