linux-kernel - [PATCH] ALSA: usb-audio: Mark expected switch fall-through

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Date:   Wed, 8 Aug 2018 17:23:44 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH] ALSA: usb-audio: Mark expected switch fall-through

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

Addresses-Coverity-ID: 1357413 ("Missing break in switch")
Addresses-Coverity-ID: 114917 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
 sound/usb/mixer.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 73e811f..c63c84b 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -856,12 +856,14 @@ static int check_input_term(struct mixer_build *state, int id,
 					term->type = UAC3_PROCESSING_UNIT << 16; /* virtual type */
 				else /* UAC_VERSION_2 */
 					term->type = UAC3_EFFECT_UNIT << 16; /* virtual type */
+				/* fall through */
 			case UAC1_EXTENSION_UNIT:
 			/* UAC2_PROCESSING_UNIT_V2 */
 				if (protocol == UAC_VERSION_1 && !term->type)
 					term->type = UAC3_EXTENSION_UNIT << 16; /* virtual type */
 				else if (protocol == UAC_VERSION_2 && !term->type)
 					term->type = UAC3_PROCESSING_UNIT << 16; /* virtual type */
+				/* fall through */
 			case UAC2_EXTENSION_UNIT_V2: {
 				struct uac_processing_unit_descriptor *d = p1;
 
-- 
2.7.4