linux-kernel - [PATCH] USB: musb: mark expected switch fall-throughs

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Message-ID: <20180628183233.GA23194@embeddedor.com>
Date:   Thu, 28 Jun 2018 13:32:33 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Bin Liu <b-liu@...com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH] USB: musb: 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@...eddedor.com>
---
 drivers/usb/musb/musb_dsps.c | 2 +-
 drivers/usb/musb/musb_host.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index fb871ea..df827ff 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -237,7 +237,7 @@ static int dsps_check_status(struct musb *musb, void *unused)
 		}
 		musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
 		skip_session = 1;
-		/* fall */
+		/* fall through */
 
 	case OTG_STATE_A_IDLE:
 	case OTG_STATE_B_IDLE:
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 8000c7c..b59ce9a 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -378,6 +378,7 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb,
 				qh = first_qh(head);
 				break;
 			}
+			/* else: fall through */
 
 		case USB_ENDPOINT_XFER_ISOC:
 		case USB_ENDPOINT_XFER_INT:
-- 
2.7.4