mmc: clean up unused parts of block driver

Remove dead code and unused structs from the block driver.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/mmc/card/block.c

@@ -135,23 +135,6 @@ struct mmc_blk_request {
 	struct mmc_data		data;
 };
 
-static int mmc_blk_prep_rq(struct mmc_queue *mq, struct request *req)
-{
-	struct mmc_blk_data *md = mq->data;
-	int stat = BLKPREP_OK;
-
-	/*
-	 * If we have no device, we haven't finished initialising.
-	 */
-	if (!md || !mq->card) {
-		printk(KERN_ERR "%s: killing request - no device/host\n",
-		       req->rq_disk->disk_name);
-		stat = BLKPREP_KILL;
-	}
-
-	return stat;
-}
-
 static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
 {
 	int err;
@@ -460,7 +443,6 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
 	if (ret)
 		goto err_putdisk;
 
-	md->queue.prep_fn = mmc_blk_prep_rq;
 	md->queue.issue_fn = mmc_blk_issue_rq;
 	md->queue.data = md;
 

drivers/mmc/card/queue.c

@@ -20,40 +20,21 @@
 #define MMC_QUEUE_SUSPENDED	(1 << 0)
 
 /*
- * Prepare a MMC request.  Essentially, this means passing the
- * preparation off to the media driver.  The media driver will
- * create a mmc_io_request in req->special.
+ * Prepare a MMC request. This just filters out odd stuff.
  */
 static int mmc_prep_request(struct request_queue *q, struct request *req)
 {
-	struct mmc_queue *mq = q->queuedata;
-	int ret = BLKPREP_KILL;
-
-	if (blk_special_request(req)) {
-		/*
-		 * Special commands already have the command
-		 * blocks already setup in req->special.
-		 */
-		BUG_ON(!req->special);
-
-		ret = BLKPREP_OK;
-	} else if (blk_fs_request(req) || blk_pc_request(req)) {
-		/*
-		 * Block I/O requests need translating according
-		 * to the protocol.
-		 */
-		ret = mq->prep_fn(mq, req);
-	} else {
-		/*
-		 * Everything else is invalid.
-		 */
+	/*
+	 * We only like normal block requests.
+	 */
+	if (!blk_fs_request(req) && !blk_pc_request(req)) {
 		blk_dump_rq_flags(req, "MMC bad request");
+		return BLKPREP_KILL;
 	}
 
-	if (ret == BLKPREP_OK)
-		req->cmd_flags |= REQ_DONTPREP;
+	req->cmd_flags |= REQ_DONTPREP;
 
-	return ret;
+	return BLKPREP_OK;
 }
 
 static int mmc_queue_thread(void *d)

drivers/mmc/card/queue.h

@@ -10,20 +10,12 @@ struct mmc_queue {
 	struct semaphore	thread_sem;
 	unsigned int		flags;
 	struct request		*req;
-	int			(*prep_fn)(struct mmc_queue *, struct request *);
 	int			(*issue_fn)(struct mmc_queue *, struct request *);
 	void			*data;
 	struct request_queue	*queue;
 	struct scatterlist	*sg;
 };
 
-struct mmc_io_request {
-	struct request		*rq;
-	int			num;
-	struct mmc_command	selcmd;		/* mmc_queue private */
-	struct mmc_command	cmd[4];		/* max 4 commands */
-};
-
 extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *);
 extern void mmc_cleanup_queue(struct mmc_queue *);
 extern void mmc_queue_suspend(struct mmc_queue *);