linux-kernel - [PATCH] drm/i915/intel_sdvo: mark expected switch fall-throughs

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Message-ID: <20171108202725.GA7246@embeddedor.com>
Date:   Wed, 8 Nov 2017 14:27:25 -0600
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>
Cc:     intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] drm/i915/intel_sdvo: mark expected switch fall-throughs

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

Addresses-Coverity-ID: 141432
Addresses-Coverity-ID: 141433
Addresses-Coverity-ID: 141434
Addresses-Coverity-ID: 141435
Addresses-Coverity-ID: 141436
Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 drivers/gpu/drm/i915/intel_sdvo.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 7437944..921e372 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1327,6 +1327,7 @@ static void intel_sdvo_pre_enable(struct intel_encoder *intel_encoder,
 	switch (crtc_state->pixel_multiplier) {
 	default:
 		WARN(1, "unknown pixel multiplier specified\n");
+		/* fall through */
 	case 1: rate = SDVO_CLOCK_RATE_MULT_1X; break;
 	case 2: rate = SDVO_CLOCK_RATE_MULT_2X; break;
 	case 4: rate = SDVO_CLOCK_RATE_MULT_4X; break;
@@ -2274,15 +2275,15 @@ intel_sdvo_guess_ddc_bus(struct intel_sdvo *sdvo)
 	 */
 	switch (sdvo->controlled_output) {
 	case SDVO_OUTPUT_LVDS1:
-		mask |= SDVO_OUTPUT_LVDS1;
+		mask |= SDVO_OUTPUT_LVDS1; /* fall through */
 	case SDVO_OUTPUT_LVDS0:
-		mask |= SDVO_OUTPUT_LVDS0;
+		mask |= SDVO_OUTPUT_LVDS0; /* fall through */
 	case SDVO_OUTPUT_TMDS1:
-		mask |= SDVO_OUTPUT_TMDS1;
+		mask |= SDVO_OUTPUT_TMDS1; /* fall through */
 	case SDVO_OUTPUT_TMDS0:
-		mask |= SDVO_OUTPUT_TMDS0;
+		mask |= SDVO_OUTPUT_TMDS0; /* fall through */
 	case SDVO_OUTPUT_RGB1:
-		mask |= SDVO_OUTPUT_RGB1;
+		mask |= SDVO_OUTPUT_RGB1; /* fall through */
 	case SDVO_OUTPUT_RGB0:
 		mask |= SDVO_OUTPUT_RGB0;
 		break;
-- 
2.7.4