ide: mark expected switch fall-through

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

This patch fixes the following warning:

drivers/ide/ide-floppy.c: In function ‘ide_floppy_get_capacity’:
drivers/ide/ide-floppy.c:424:7: warning: this statement may fall through [-Wimplicit-fallthrough=]

    if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
       ^

drivers/ide/ide-floppy.c:431:3: note: here
case CAPACITY_CURRENT:
^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough.

---
 drivers/ide/ide-floppy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 780d33ccc5d8..1ea2f9e82bf8 100644
@@ -427,7 +427,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
 				 * (maintains previous driver behaviour)
 				 */
 				break;
-			/* else: fall through */
+			/* fall through */
 		case CAPACITY_CURRENT:
 			/* Normal Zip/LS-120 disks */
 			if (memcmp(cap_desc, &floppy->cap_desc, 8))

2.20.1

From: "Gustavo A. R. Silva" <[email protected]>
Date: Mon, 11 Feb 2019 16:17:20 -0600

Applied.