From 4de09ffcf4f622876668b76c8e416f4143b32a9e Mon Sep 17 00:00:00 2001
From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
Date: Mon, 29 Jul 2019 17:27:52 -0500
Subject: drm: sti: Mark expected switch fall-throughs
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Git-commit: 4de09ffcf4f622876668b76c8e416f4143b32a9e
Patch-mainline: v5.4-rc1
References: bsc#1152472

Mark switch cases where we are expecting to fall through.

This patch fixes the following warning (Building: arm):

drivers/gpu/drm/sti/sti_hdmi.c: In function ‘hdmi_audio_configure’:
drivers/gpu/drm/sti/sti_hdmi.c:851:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
   audio_cfg |= HDMI_AUD_CFG_CH78_VALID;
drivers/gpu/drm/sti/sti_hdmi.c:852:2: note: here
  case 6:
  ^~~~
drivers/gpu/drm/sti/sti_hdmi.c:853:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
   audio_cfg |= HDMI_AUD_CFG_CH56_VALID;
drivers/gpu/drm/sti/sti_hdmi.c:854:2: note: here
  case 4:
  ^~~~
drivers/gpu/drm/sti/sti_hdmi.c:855:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
   audio_cfg |= HDMI_AUD_CFG_CH34_VALID | HDMI_AUD_CFG_8CH;
drivers/gpu/drm/sti/sti_hdmi.c:856:2: note: here
  case 2:
  ^~~~

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190729222752.GA20277@embeddedor
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/sti/sti_hdmi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index f03d617edc4c..1617c5098a50 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -849,10 +849,13 @@ static int hdmi_audio_configure(struct sti_hdmi *hdmi)
 	switch (info->channels) {
 	case 8:
 		audio_cfg |= HDMI_AUD_CFG_CH78_VALID;
+		/* fall through */
 	case 6:
 		audio_cfg |= HDMI_AUD_CFG_CH56_VALID;
+		/* fall through */
 	case 4:
 		audio_cfg |= HDMI_AUD_CFG_CH34_VALID | HDMI_AUD_CFG_8CH;
+		/* fall through */
 	case 2:
 		audio_cfg |= HDMI_AUD_CFG_CH12_VALID;
 		break;
-- 
2.28.0