treewide: Use fallthrough pseudo-keyword

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

20 files changed, 60 insertions, 60 deletions

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 8c55f5bee9ab..f4053dd6bde9 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -712,7 +712,7 @@ gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
 			switch (intel_dsi->pixel_format) {
 			default:
 				MISSING_CASE(intel_dsi->pixel_format);
-				/* fallthrough */
+				fallthrough;
 			case MIPI_DSI_FMT_RGB565:
 				tmp |= PIX_FMT_RGB565;
 				break;
@@ -739,7 +739,7 @@ gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
 			switch (intel_dsi->video_mode_format) {
 			default:
 				MISSING_CASE(intel_dsi->video_mode_format);
-				/* fallthrough */
+				fallthrough;
 			case VIDEO_MODE_NON_BURST_WITH_SYNC_EVENTS:
 				tmp |= VIDEO_MODE_SYNC_EVENT;
 				break;
@@ -792,7 +792,7 @@ gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
 		switch (pipe) {
 		default:
 			MISSING_CASE(pipe);
-			/* fallthrough */
+			fallthrough;
 		case PIPE_A:
 			tmp |= TRANS_DDI_EDP_INPUT_A_ON;
 			break;
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index c53c85d38fa5..a0a41ec5c341 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -905,7 +905,7 @@ parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
 			drm_dbg_kms(&dev_priv->drm,
 				    "VBT tp1 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
 				    psr_table->tp1_wakeup_time);
-			/* fallthrough */
+			fallthrough;
 		case 2:
 			dev_priv->vbt.psr.tp1_wakeup_time_us = 2500;
 			break;
@@ -925,7 +925,7 @@ parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
 			drm_dbg_kms(&dev_priv->drm,
 				    "VBT tp2_tp3 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
 				    psr_table->tp2_tp3_wakeup_time);
-			/* fallthrough */
+			fallthrough;
 		case 2:
 			dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 2500;
 		break;
@@ -1775,7 +1775,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv,
 		switch (child->hdmi_max_data_rate) {
 		default:
 			MISSING_CASE(child->hdmi_max_data_rate);
-			/* fall through */
+			fallthrough;
 		case HDMI_MAX_DATA_RATE_PLATFORM:
 			max_tmds_clock = 0;
 			break;
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index bb91dace304a..91a8161e7c05 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -326,7 +326,7 @@ static void pnv_get_cdclk(struct drm_i915_private *dev_priv,
 	default:
 		drm_err(&dev_priv->drm,
 			"Unknown pnv display core clock 0x%04x\n", gcfgc);
-		/* fall through */
+		fallthrough;
 	case GC_DISPLAY_CLOCK_133_MHZ_PNV:
 		cdclk_config->cdclk = 133333;
 		break;
@@ -766,7 +766,7 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
 	switch (cdclk) {
 	default:
 		MISSING_CASE(cdclk);
-		/* fall through */
+		fallthrough;
 	case 337500:
 		val |= LCPLL_CLK_FREQ_337_5_BDW;
 		break;
@@ -1042,7 +1042,7 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
 		drm_WARN_ON(&dev_priv->drm,
 			    cdclk != dev_priv->cdclk.hw.bypass);
 		drm_WARN_ON(&dev_priv->drm, vco != 0);
-		/* fall through */
+		fallthrough;
 	case 308571:
 	case 337500:
 		freq_select = CDCLK_FREQ_337_308;
@@ -1333,7 +1333,7 @@ static void icl_readout_refclk(struct drm_i915_private *dev_priv,
 	switch (dssm) {
 	default:
 		MISSING_CASE(dssm);
-		/* fall through */
+		fallthrough;
 	case ICL_DSSM_CDCLK_PLL_REFCLK_24MHz:
 		cdclk_config->ref = 24000;
 		break;
@@ -1561,7 +1561,7 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
 		drm_WARN_ON(&dev_priv->drm,
 			    cdclk != dev_priv->cdclk.hw.bypass);
 		drm_WARN_ON(&dev_priv->drm, vco != 0);
-		/* fall through */
+		fallthrough;
 	case 2:
 		divider = BXT_CDCLK_CD2X_DIV_SEL_1;
 		break;
diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.c b/drivers/gpu/drm/i915/display/intel_combo_phy.c
index eccaa79cb4a9..6968de4f3477 100644
--- a/drivers/gpu/drm/i915/display/intel_combo_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c
@@ -52,7 +52,7 @@ cnl_get_procmon_ref_values(struct drm_i915_private *dev_priv, enum phy phy)
 	switch (val & (PROCESS_INFO_MASK | VOLTAGE_INFO_MASK)) {
 	default:
 		MISSING_CASE(val);
-		/* fall through */
+		fallthrough;
 	case VOLTAGE_INFO_0_85V | PROCESS_INFO_DOT_0:
 		procmon = &cnl_procmon_values[PROCMON_0_85V_DOT_0];
 		break;
@@ -320,7 +320,7 @@ void intel_combo_phy_power_up_lanes(struct drm_i915_private *dev_priv,
 			break;
 		default:
 			MISSING_CASE(lane_count);
-			/* fall-through */
+			fallthrough;
 		case 4:
 			lane_mask = PWR_UP_ALL_LANES;
 			break;
@@ -337,7 +337,7 @@ void intel_combo_phy_power_up_lanes(struct drm_i915_private *dev_priv,
 			break;
 		default:
 			MISSING_CASE(lane_count);
-			/* fall-through */
+			fallthrough;
 		case 4:
 			lane_mask = PWR_UP_ALL_LANES;
 			break;
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 2c484b55bcdf..a49ff3a1a63c 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1888,7 +1888,7 @@ static void intel_ddi_get_encoder_pipes(struct intel_encoder *encoder,
 		switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
 		default:
 			MISSING_CASE(tmp & TRANS_DDI_EDP_INPUT_MASK);
-			/* fallthrough */
+			fallthrough;
 		case TRANS_DDI_EDP_INPUT_A_ON:
 		case TRANS_DDI_EDP_INPUT_A_ONOFF:
 			*pipe_mask = BIT(PIPE_A);
@@ -4268,7 +4268,7 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
 			pipe_config->hdmi_scrambling = true;
 		if (temp & TRANS_DDI_HIGH_TMDS_CHAR_RATE)
 			pipe_config->hdmi_high_tmds_clock_ratio = true;
-		/* fall through */
+		fallthrough;
 	case TRANS_DDI_MODE_SELECT_DVI:
 		pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI);
 		pipe_config->lane_count = 4;
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index b2ec3a5141cc..68325678f5ef 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2029,12 +2029,12 @@ intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
 	case I915_FORMAT_MOD_Y_TILED_CCS:
 		if (is_ccs_plane(fb, color_plane))
 			return 128;
-		/* fall through */
+		fallthrough;
 	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
 	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
 		if (is_ccs_plane(fb, color_plane))
 			return 64;
-		/* fall through */
+		fallthrough;
 	case I915_FORMAT_MOD_Y_TILED:
 		if (IS_GEN(dev_priv, 2) || HAS_128_BYTE_Y_TILING(dev_priv))
 			return 128;
@@ -2043,7 +2043,7 @@ intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
 	case I915_FORMAT_MOD_Yf_TILED_CCS:
 		if (is_ccs_plane(fb, color_plane))
 			return 128;
-		/* fall through */
+		fallthrough;
 	case I915_FORMAT_MOD_Yf_TILED:
 		switch (cpp) {
 		case 1:
@@ -2185,7 +2185,7 @@ static unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
 	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
 		if (is_semiplanar_uv_plane(fb, color_plane))
 			return intel_tile_row_size(fb, color_plane);
-		/* Fall-through */
+		fallthrough;
 	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
 		return 16 * 1024;
 	case I915_FORMAT_MOD_Y_TILED_CCS:
@@ -2194,7 +2194,7 @@ static unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
 		if (INTEL_GEN(dev_priv) >= 12 &&
 		    is_semiplanar_uv_plane(fb, color_plane))
 			return intel_tile_row_size(fb, color_plane);
-		/* Fall-through */
+		fallthrough;
 	case I915_FORMAT_MOD_Yf_TILED:
 		return 1 * 1024 * 1024;
 	default:
@@ -6211,7 +6211,7 @@ static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
 	case DRM_FORMAT_ARGB16161616F:
 		if (INTEL_GEN(dev_priv) >= 11)
 			break;
-		/* fall through */
+		fallthrough;
 	default:
 		drm_dbg_kms(&dev_priv->drm,
 			    "[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
@@ -10896,7 +10896,7 @@ static void hsw_get_ddi_pll(struct drm_i915_private *dev_priv, enum port port,
 		break;
 	default:
 		MISSING_CASE(ddi_pll_sel);
-		/* fall through */
+		fallthrough;
 	case PORT_CLK_SEL_NONE:
 		return;
 	}
@@ -10956,10 +10956,10 @@ static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
 			drm_WARN(dev, 1,
 				 "unknown pipe linked to transcoder %s\n",
 				 transcoder_name(panel_transcoder));
-			/* fall through */
+			fallthrough;
 		case TRANS_DDI_EDP_INPUT_A_ONOFF:
 			force_thru = true;
-			/* fall through */
+			fallthrough;
 		case TRANS_DDI_EDP_INPUT_A_ON:
 			trans_pipe = PIPE_A;
 			break;
@@ -13183,7 +13183,7 @@ static bool check_digital_port_conflicts(struct intel_atomic_state *state)
 		case INTEL_OUTPUT_DDI:
 			if (drm_WARN_ON(dev, !HAS_DDI(to_i915(dev))))
 				break;
-			/* else, fall through */
+			fallthrough;
 		case INTEL_OUTPUT_DP:
 		case INTEL_OUTPUT_HDMI:
 		case INTEL_OUTPUT_EDP:
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index aeb6ee395cce..afa7a378b31d 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -892,7 +892,7 @@ static int hsw_ddi_wrpll_get_freq(struct drm_i915_private *dev_priv,
 			refclk = dev_priv->dpll.ref_clks.nssc;
 			break;
 		}
-		/* fall through */
+		fallthrough;
 	case WRPLL_REF_PCH_SSC:
 		/*
 		 * We could calculate spread here, but our checking
@@ -2977,7 +2977,7 @@ static bool icl_calc_tbt_pll(struct intel_crtc_state *crtc_state,
 		switch (dev_priv->dpll.ref_clks.nssc) {
 		default:
 			MISSING_CASE(dev_priv->dpll.ref_clks.nssc);
-			/* fall-through */
+			fallthrough;
 		case 19200:
 			*pll_params = tgl_tbt_pll_19_2MHz_values;
 			break;
@@ -2992,7 +2992,7 @@ static bool icl_calc_tbt_pll(struct intel_crtc_state *crtc_state,
 		switch (dev_priv->dpll.ref_clks.nssc) {
 		default:
 			MISSING_CASE(dev_priv->dpll.ref_clks.nssc);
-			/* fall-through */
+			fallthrough;
 		case 19200:
 		case 38400:
 			*pll_params = icl_tbt_pll_19_2MHz_values;
@@ -3120,7 +3120,7 @@ static bool icl_mg_pll_find_divisors(int clock_khz, bool is_dp, bool use_ssc,
 			switch (div1) {
 			default:
 				MISSING_CASE(div1);
-				/* fall through */
+				fallthrough;
 			case 2:
 				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2;
 				break;
diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c
index bbde3b12c311..4072d7062efd 100644
--- a/drivers/gpu/drm/i915/display/intel_panel.c
+++ b/drivers/gpu/drm/i915/display/intel_panel.c
@@ -229,7 +229,7 @@ int intel_pch_panel_fitting(struct intel_crtc_state *crtc_state,
 	case DRM_MODE_SCALE_NONE:
 		WARN_ON(adjusted_mode->crtc_hdisplay != crtc_state->pipe_src_w);
 		WARN_ON(adjusted_mode->crtc_vdisplay != crtc_state->pipe_src_h);
-		/* fall through */
+		fallthrough;
 	case DRM_MODE_SCALE_FULLSCREEN:
 		x = y = 0;
 		width = adjusted_mode->crtc_hdisplay;
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
index 2da4388e1540..5e9fb349c829 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -1531,7 +1531,7 @@ static void intel_sdvo_pre_enable(struct intel_atomic_state *state,
 	default:
 		drm_WARN(&dev_priv->drm, 1,
 			 "unknown pixel multiplier specified\n");
-		/* fall through */
+		fallthrough;
 	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;
@@ -2549,19 +2549,19 @@ intel_sdvo_guess_ddc_bus(struct intel_sdvo *sdvo)
 	switch (sdvo->controlled_output) {
 	case SDVO_OUTPUT_LVDS1:
 		mask |= SDVO_OUTPUT_LVDS1;
-		/* fall through */
+		fallthrough;
 	case SDVO_OUTPUT_LVDS0:
 		mask |= SDVO_OUTPUT_LVDS0;
-		/* fall through */
+		fallthrough;
 	case SDVO_OUTPUT_TMDS1:
 		mask |= SDVO_OUTPUT_TMDS1;
-		/* fall through */
+		fallthrough;
 	case SDVO_OUTPUT_TMDS0:
 		mask |= SDVO_OUTPUT_TMDS0;
-		/* fall through */
+		fallthrough;
 	case SDVO_OUTPUT_RGB1:
 		mask |= SDVO_OUTPUT_RGB1;
-		/* fall through */
+		fallthrough;
 	case SDVO_OUTPUT_RGB0:
 		mask |= SDVO_OUTPUT_RGB0;
 		break;
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index d03860fef2d7..c89f5f7ccb06 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -2147,7 +2147,7 @@ static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
 		case DRM_FORMAT_RGB565:
 			if (INTEL_GEN(dev_priv) >= 11)
 				break;
-			/* fall through */
+			fallthrough;
 		case DRM_FORMAT_C8:
 		case DRM_FORMAT_XRGB16161616F:
 		case DRM_FORMAT_XBGR16161616F:
@@ -2702,7 +2702,7 @@ static bool g4x_sprite_format_mod_supported(struct drm_plane *_plane,
 		if (modifier == DRM_FORMAT_MOD_LINEAR ||
 		    modifier == I915_FORMAT_MOD_X_TILED)
 			return true;
-		/* fall through */
+		fallthrough;
 	default:
 		return false;
 	}
@@ -2733,7 +2733,7 @@ static bool snb_sprite_format_mod_supported(struct drm_plane *_plane,
 		if (modifier == DRM_FORMAT_MOD_LINEAR ||
 		    modifier == I915_FORMAT_MOD_X_TILED)
 			return true;
-		/* fall through */
+		fallthrough;
 	default:
 		return false;
 	}
@@ -2768,7 +2768,7 @@ static bool vlv_sprite_format_mod_supported(struct drm_plane *_plane,
 		if (modifier == DRM_FORMAT_MOD_LINEAR ||
 		    modifier == I915_FORMAT_MOD_X_TILED)
 			return true;
-		/* fall through */
+		fallthrough;
 	default:
 		return false;
 	}
@@ -2801,7 +2801,7 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 	case DRM_FORMAT_ABGR8888:
 		if (is_ccs_modifier(modifier))
 			return true;
-		/* fall through */
+		fallthrough;
 	case DRM_FORMAT_RGB565:
 	case DRM_FORMAT_XRGB2101010:
 	case DRM_FORMAT_XBGR2101010:
@@ -2819,7 +2819,7 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 	case DRM_FORMAT_XVYU2101010:
 		if (modifier == I915_FORMAT_MOD_Yf_TILED)
 			return true;
-		/* fall through */
+		fallthrough;
 	case DRM_FORMAT_C8:
 	case DRM_FORMAT_XBGR16161616F:
 	case DRM_FORMAT_ABGR16161616F:
@@ -2834,7 +2834,7 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 		    modifier == I915_FORMAT_MOD_X_TILED ||
 		    modifier == I915_FORMAT_MOD_Y_TILED)
 			return true;
-		/* fall through */
+		fallthrough;
 	default:
 		return false;
 	}
@@ -2860,7 +2860,7 @@ static bool gen12_plane_format_mod_supported(struct drm_plane *_plane,
 	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
 		if (!gen12_plane_supports_mc_ccs(dev_priv, plane->id))
 			return false;
-		/* fall through */
+		fallthrough;
 	case DRM_FORMAT_MOD_LINEAR:
 	case I915_FORMAT_MOD_X_TILED:
 	case I915_FORMAT_MOD_Y_TILED:
@@ -2877,7 +2877,7 @@ static bool gen12_plane_format_mod_supported(struct drm_plane *_plane,
 	case DRM_FORMAT_ABGR8888:
 		if (is_ccs_modifier(modifier))
 			return true;
-		/* fall through */
+		fallthrough;
 	case DRM_FORMAT_YUYV:
 	case DRM_FORMAT_YVYU:
 	case DRM_FORMAT_UYVY:
@@ -2889,7 +2889,7 @@ static bool gen12_plane_format_mod_supported(struct drm_plane *_plane,
 	case DRM_FORMAT_P016:
 		if (modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS)
 			return true;
-		/* fall through */
+		fallthrough;
 	case DRM_FORMAT_RGB565:
 	case DRM_FORMAT_XRGB2101010:
 	case DRM_FORMAT_XBGR2101010:
@@ -2910,7 +2910,7 @@ static bool gen12_plane_format_mod_supported(struct drm_plane *_plane,
 		    modifier == I915_FORMAT_MOD_X_TILED ||
 		    modifier == I915_FORMAT_MOD_Y_TILED)
 			return true;
-		/* fall through */
+		fallthrough;
 	default:
 		return false;
 	}
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c
index 5b5dc86a5737..8f67aef18b2d 100644
--- a/drivers/gpu/drm/i915/display/intel_tc.c
+++ b/drivers/gpu/drm/i915/display/intel_tc.c
@@ -159,7 +159,7 @@ int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port)
 	switch (lane_mask) {
 	default:
 		MISSING_CASE(lane_mask);
-		/* fall-through */
+		fallthrough;
 	case 0x1:
 	case 0x2:
 	case 0x4:
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
index b23368529a40..753f82d87a31 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
@@ -209,7 +209,7 @@ static vm_fault_t i915_error_to_vmf_fault(int err)
 	switch (err) {
 	default:
 		WARN_ONCE(err, "unhandled error in %s: %i\n", __func__, err);
-		/* fallthrough */
+		fallthrough;
 	case -EIO: /* shmemfs failure from swap device */
 	case -EFAULT: /* purged object */
 	case -ENODEV: /* bad object, how did you get here! */
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
index 7050519c87a4..d15ff6748a50 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
@@ -276,7 +276,7 @@ static void *i915_gem_object_map(struct drm_i915_gem_object *obj,
 	switch (type) {
 	default:
 		MISSING_CASE(type);
-		/* fallthrough - to use PAGE_KERNEL anyway */
+		fallthrough;	/* to use PAGE_KERNEL anyway */
 	case I915_MAP_WB:
 		pgprot = PAGE_KERNEL;
 		break;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index e0f21f12d3ce..0be5e8683337 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -249,7 +249,7 @@ static void vlv_get_stolen_reserved(struct drm_i915_private *i915,
 	switch (reg_val & GEN7_STOLEN_RESERVED_SIZE_MASK) {
 	default:
 		MISSING_CASE(reg_val & GEN7_STOLEN_RESERVED_SIZE_MASK);
-		/* fall through */
+		fallthrough;
 	case GEN7_STOLEN_RESERVED_1M:
 		*size = 1024 * 1024;
 		break;
@@ -416,7 +416,7 @@ static int i915_gem_init_stolen(struct drm_i915_private *i915)
 	case 4:
 		if (!IS_G4X(i915))
 			break;
-		/* fall through */
+		fallthrough;
 	case 5:
 		g4x_get_stolen_reserved(i915, uncore,
 					&reserved_base, &reserved_size);
@@ -445,7 +445,7 @@ static int i915_gem_init_stolen(struct drm_i915_private *i915)
 		break;
 	default:
 		MISSING_CASE(INTEL_GEN(i915));
-		/* fall-through */
+		fallthrough;
 	case 11:
 	case 12:
 		icl_get_stolen_reserved(i915, uncore,
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index dd1a42c4d344..26087dd79782 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -213,7 +213,7 @@ u32 intel_engine_context_size(struct intel_gt *gt, u8 class)
 		break;
 	default:
 		MISSING_CASE(class);
-		/* fall through */
+		fallthrough;
 	case VIDEO_DECODE_CLASS:
 	case VIDEO_ENHANCEMENT_CLASS:
 	case COPY_ENGINE_CLASS:
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index 62979ea591f0..99e28d9021e8 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -1437,7 +1437,7 @@ i915_get_ggtt_vma_pages(struct i915_vma *vma)
 	switch (vma->ggtt_view.type) {
 	default:
 		GEM_BUG_ON(vma->ggtt_view.type);
-		/* fall through */
+		fallthrough;
 	case I915_GGTT_VIEW_NORMAL:
 		vma->pages = vma->obj->mm.pages;
 		return 0;
diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
index 94915f668715..898593ca4889 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -100,7 +100,7 @@ static void set_hwsp(struct intel_engine_cs *engine, u32 offset)
 		 */
 		default:
 			GEM_BUG_ON(engine->id);
-			/* fallthrough */
+			fallthrough;
 		case RCS0:
 			hwsp = RENDER_HWS_PGA_GEN7;
 			break;
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index 63bba7b4bb2f..05f3bc98d242 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -1226,7 +1226,7 @@ static int handle_g2v_notification(struct intel_vgpu *vgpu, int notification)
 	switch (notification) {
 	case VGT_G2V_PPGTT_L3_PAGE_TABLE_CREATE:
 		root_entry_type = GTT_TYPE_PPGTT_ROOT_L3_ENTRY;
-		/* fall through */
+		fallthrough;
 	case VGT_G2V_PPGTT_L4_PAGE_TABLE_CREATE:
 		mm = intel_vgpu_get_ppgtt_mm(vgpu, root_entry_type, pdps);
 		return PTR_ERR_OR_ZERO(mm);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 6a3a2ce0b394..3e6cbb0d1150 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1159,7 +1159,7 @@ static void engine_record_registers(struct intel_engine_coredump *ee)
 			switch (engine->id) {
 			default:
 				MISSING_CASE(engine->id);
-				/* fall through */
+				fallthrough;
 			case RCS0:
 				mmio = RENDER_HWS_PGA_GEN7;
 				break;
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index 056994224c6b..69c0fa20eba1 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -474,7 +474,7 @@ config_status(struct drm_i915_private *i915, u64 config)
 		if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
 			/* Requires a mutex for sampling! */
 			return -ENODEV;
-		/* Fall-through. */
+		fallthrough;
 	case I915_PMU_REQUESTED_FREQUENCY:
 		if (INTEL_GEN(i915) < 6)
 			return -ENODEV;