drm/qxl: drop unused fields from struct qxl_device

slot_id_bits and slot_gen_bits can be read directly from qxlrom instead.
va_slot_mask is never used anywhere.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190118122020.27596-6-kraxel@redhat.com

drivers/gpu/drm/qxl/qxl_drv.h

@@ -232,9 +232,6 @@ struct qxl_device {
 
 	struct qxl_memslot main_slot;
 	struct qxl_memslot surfaces_slot;
-	uint8_t		slot_id_bits;
-	uint8_t		slot_gen_bits;
-	uint64_t	va_slot_mask;
 
 	spinlock_t	release_lock;
 	struct idr	release_idr;

drivers/gpu/drm/qxl/qxl_kms.c

@@ -78,9 +78,9 @@ static void setup_slot(struct qxl_device *qdev,
 
 	slot->generation = qdev->rom->slot_generation;
 	high_bits = (qdev->rom->slots_start + slot->index)
-		<< qdev->slot_gen_bits;
+		<< qdev->rom->slot_gen_bits;
 	high_bits |= slot->generation;
-	high_bits <<= (64 - (qdev->slot_gen_bits + qdev->slot_id_bits));
+	high_bits <<= (64 - (qdev->rom->slot_gen_bits + qdev->rom->slot_id_bits));
 	slot->high_bits = high_bits;
 
 	DRM_INFO("slot %d (%s): base 0x%08lx, size 0x%08lx\n",
@@ -235,12 +235,6 @@ int qxl_device_init(struct qxl_device *qdev,
 		r = -ENOMEM;
 		goto cursor_ring_free;
 	}
-	/* TODO - slot initialization should happen on reset. where is our
-	 * reset handler? */
-	qdev->slot_gen_bits = qdev->rom->slot_gen_bits;
-	qdev->slot_id_bits = qdev->rom->slot_id_bits;
-	qdev->va_slot_mask =
-		(~(uint64_t)0) >> (qdev->slot_id_bits + qdev->slot_gen_bits);
 
 	idr_init(&qdev->release_idr);
 	spin_lock_init(&qdev->release_idr_lock);