drm/radeon/r300: Mark expected switch fall-throughs

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

Notice that in this particular case, I replaced "Pass through." with "Fall through.", which is what GCC is expecting to find.

Addresses-Coverity-ID: 114734 ("Missing break in switch")
Addresses-Coverity-ID: 114735 ("Missing break in switch")

Signed-off-by Gustavo A. R. Silva <[email protected]>

---
 drivers/gpu/drm/radeon/r300.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

drivers/gpu/drm/radeon/r300.c +2 -3

index 21161aa..652126f 100644
@@ -814,7 +814,7 @@ static int r300_packet0_check(struct radeon_cs_parser *p,
                                          ((idx_value >> 21) & 0xF));
                                return -EINVAL;
                        }
-                       /* Pass through. */
+                       /* Fall through. */
                case 6:
                        track->cb[i].cpp = 4;
                        break;

@@ -965,7 +965,7 @@ static int r300_packet0_check(struct radeon_cs_parser *p,
                                return -EINVAL;
                        }
                        /* The same rules apply as for DXT3/5. */
-                       /* Pass through. */
+                       /* Fall through. */
                case R300_TX_FORMAT_DXT3:
                case R300_TX_FORMAT_DXT5:
                        track->textures[i].cpp = 1;
--

2.7.4

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This and the r420 patch applied. Thanks!