[RFC PATCH v3 55/78] hw/display: add fallthrough pseudo-keyword

[Emmanouil Pitsidianakis]

In preparation of raising -Wimplicit-fallthrough to 5, replace all
fall-through comments with the fallthrough attribute pseudo-keyword.

Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidiana...@linaro.org>
---
 hw/display/cg3.c        | 2 +-
 hw/display/cirrus_vga.c | 2 +-
 hw/display/tcx.c        | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/display/cg3.c b/hw/display/cg3.c
index 2e9656ae1c..53eb9831b2 100644
--- a/hw/display/cg3.c
+++ b/hw/display/cg3.c
@@ -231,7 +231,7 @@ static void cg3_reg_write(void *opaque, hwaddr addr, 
uint64_t val,
                 s->b[s->dac_index] = regval;
                 /* Index autoincrement */
                 s->dac_index = (s->dac_index + 1) & 0xff;
-                /* fall through */
+                fallthrough;
             default:
                 s->dac_state = 0;
                 break;
diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
index b80f98b6c4..f1513a084c 100644
--- a/hw/display/cirrus_vga.c
+++ b/hw/display/cirrus_vga.c
@@ -1360,7 +1360,7 @@ static void cirrus_vga_write_sr(CirrusVGAState * s, 
uint32_t val)
         break;
     case 0x07:                  // Extended Sequencer Mode
         cirrus_update_memory_access(s);
-        /* fall through */
+        fallthrough;
     case 0x08:                  // EEPROM Control
     case 0x09:                  // Scratch Register 0
     case 0x0a:                  // Scratch Register 1
diff --git a/hw/display/tcx.c b/hw/display/tcx.c
index 1b27b64f6d..e21450d726 100644
--- a/hw/display/tcx.c
+++ b/hw/display/tcx.c
@@ -396,7 +396,7 @@ static uint64_t tcx_dac_readl(void *opaque, hwaddr addr,
     case 2:
         val = s->b[s->dac_index] << 24;
         s->dac_index = (s->dac_index + 1) & 0xff; /* Index autoincrement */
-        /* fall through */
+        fallthrough;
     default:
         s->dac_state = 0;
         break;
@@ -438,7 +438,7 @@ static void tcx_dac_writel(void *opaque, hwaddr addr, 
uint64_t val,
             s->b[index] = val >> 24;
             update_palette_entries(s, index, index + 1);
             s->dac_index = (s->dac_index + 1) & 0xff; /* Index autoincrement */
-            /* fall through */
+            fallthrough;
         default:
             s->dac_state = 0;
             break;
-- 
2.39.2