aoe: remove unused code and add cosmetic improvements

This change removes some unused code and attempts to increase code
consistency.

Signed-off-by: Ed Cashin <ecashin@coraid.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index dab7258..eb41fc5 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -75,18 +75,14 @@
 	DEVFL_UP = 1,	/* device is installed in system and ready for AoE->ATA commands */
 	DEVFL_TKILL = (1<<1),	/* flag for timer to know when to kill self */
 	DEVFL_EXT = (1<<2),	/* device accepts lba48 commands */
-	DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */
-	DEVFL_GDALLOC = (1<<4),	/* need to alloc gendisk */
-	DEVFL_KICKME = (1<<5),	/* slow polling network card catch */
-	DEVFL_NEWSIZE = (1<<6),	/* need to update dev size in block layer */
-
-	BUFFL_FAIL = 1,
+	DEVFL_GDALLOC = (1<<3),	/* need to alloc gendisk */
+	DEVFL_KICKME = (1<<4),	/* slow polling network card catch */
+	DEVFL_NEWSIZE = (1<<5),	/* need to update dev size in block layer */
 };
 
 enum {
 	DEFAULTBCNT = 2 * 512,	/* 2 sectors */
 	NPERSHELF = 16,		/* number of slots per shelf address */
-	FREETAG = -1,
 	MIN_BUFS = 16,
 	NTARGETS = 8,
 	NAOEIFS = 8,