net: usb: Mark expected switch fall-throughs

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

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/usb/catc.c b/drivers/net/usb/catc.c
index 18d36dff97ea..424053bd8b21 100644
--- a/drivers/net/usb/catc.c
+++ b/drivers/net/usb/catc.c
@@ -869,6 +869,7 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id
                 default:
                         dev_warn(&intf->dev,
                                  "Couldn't detect memory size, assuming 32k\n");
+                        /* fall through */
                 case 0x87654321:
                         catc_set_reg(catc, TxBufCount, 4);
                         catc_set_reg(catc, RxBufCount, 16);
diff --git a/drivers/net/usb/cdc-phonet.c b/drivers/net/usb/cdc-phonet.c
index 3c40312fa453..78b16eb9e58c 100644
--- a/drivers/net/usb/cdc-phonet.c
+++ b/drivers/net/usb/cdc-phonet.c
@@ -110,6 +110,7 @@ static void tx_complete(struct urb *req)
         case -ECONNRESET:
         case -ESHUTDOWN:
                 dev->stats.tx_aborted_errors++;
+                /* fall through */
         default:
                 dev->stats.tx_errors++;
                 dev_dbg(&dev->dev, "TX error (%d)\n", status);
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index c08c0d633407..a3e06a8bf9c6 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -1376,6 +1376,7 @@ static void intr_callback(struct urb *urb)
         case -ECONNRESET:       /* unlink */
         case -ESHUTDOWN:
                 netif_device_detach(tp->netdev);
+                /* fall through */
         case -ENOENT:
         case -EPROTO:
                 netif_info(tp, intr, tp->netdev,
@@ -2741,6 +2742,7 @@ static void r8153b_ups_en(struct r8152 *tp, bool enable)
                         r8152_mdio_write(tp, MII_BMCR, data);
 
                         data = r8153_phy_status(tp, PHY_STAT_LAN_ON);
+                        /* fall through */
 
                 default:
                         if (data != PHY_STAT_LAN_ON)