From d30d53bcded1b5b691bf2390e3fab7c8b0833621 Mon Sep 17 00:00:00 2001
From: Pierre Ossman <drzeus@drzeus.cx>
Date: Sat, 16 Aug 2008 21:34:02 +0200
Subject: [PATCH] --- yaml --- r: 113182 b: refs/heads/master c:
 f3eb0aaa0211fd804057070bee1fd067cd65cb13 h: refs/heads/master v: v3

---
 [refs]                         |  2 +-
 trunk/drivers/mmc/card/block.c | 23 +----------------------
 trunk/drivers/mmc/card/queue.c | 20 ++++++++++++++------
 3 files changed, 16 insertions(+), 29 deletions(-)

diff --git a/[refs] b/[refs]
index 1a89ec8fd7fd..35bbe8ceef7b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6501ff604a5ae18697c9b4cd40a7738d3a68e7fe
+refs/heads/master: f3eb0aaa0211fd804057070bee1fd067cd65cb13
diff --git a/trunk/drivers/mmc/card/block.c b/trunk/drivers/mmc/card/block.c
index ebc8b9d77613..d73cac84d9f2 100644
--- a/trunk/drivers/mmc/card/block.c
+++ b/trunk/drivers/mmc/card/block.c
@@ -215,8 +215,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_card *card = md->queue.card;
 	struct mmc_blk_request brq;
-	int ret = 1, data_size, i;
-	struct scatterlist *sg;
+	int ret = 1;
 
 	mmc_claim_host(card->host);
 
@@ -237,8 +236,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 		brq.stop.arg = 0;
 		brq.stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
 		brq.data.blocks = req->nr_sectors >> (md->block_bits - 9);
-		if (brq.data.blocks > card->host->max_blk_count)
-			brq.data.blocks = card->host->max_blk_count;
 
 		if (brq.data.blocks > 1) {
 			/* SPI multiblock writes terminate using a special
@@ -270,24 +267,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 
 		mmc_queue_bounce_pre(mq);
 
-		/*
-		 * Adjust the sg list so it is the same size as the
-		 * request.
-		 */
-		if (brq.data.blocks !=
-		    (req->nr_sectors >> (md->block_bits - 9))) {
-			data_size = brq.data.blocks * brq.data.blksz;
-			for_each_sg(brq.data.sg, sg, brq.data.sg_len, i) {
-				data_size -= sg->length;
-				if (data_size <= 0) {
-					sg->length += data_size;
-					i++;
-					break;
-				}
-			}
-			brq.data.sg_len = i;
-		}
-
 		mmc_wait_for_req(card->host, &brq.mrq);
 
 		mmc_queue_bounce_post(mq);
diff --git a/trunk/drivers/mmc/card/queue.c b/trunk/drivers/mmc/card/queue.c
index 3dee97e7d165..5c8f037dca6b 100644
--- a/trunk/drivers/mmc/card/queue.c
+++ b/trunk/drivers/mmc/card/queue.c
@@ -142,12 +142,19 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
 			bouncesz = host->max_req_size;
 		if (bouncesz > host->max_seg_size)
 			bouncesz = host->max_seg_size;
+		if (bouncesz > (host->max_blk_count * 512))
+			bouncesz = host->max_blk_count * 512;
+
+		if (bouncesz > 512) {
+			mq->bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
+			if (!mq->bounce_buf) {
+				printk(KERN_WARNING "%s: unable to "
+					"allocate bounce buffer\n",
+					mmc_card_name(card));
+			}
+		}
 
-		mq->bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
-		if (!mq->bounce_buf) {
-			printk(KERN_WARNING "%s: unable to allocate "
-				"bounce buffer\n", mmc_card_name(card));
-		} else {
+		if (mq->bounce_buf) {
 			blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_ANY);
 			blk_queue_max_sectors(mq->queue, bouncesz / 512);
 			blk_queue_max_phys_segments(mq->queue, bouncesz / 512);
@@ -175,7 +182,8 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
 
 	if (!mq->bounce_buf) {
 		blk_queue_bounce_limit(mq->queue, limit);
-		blk_queue_max_sectors(mq->queue, host->max_req_size / 512);
+		blk_queue_max_sectors(mq->queue,
+			min(host->max_blk_count, host->max_req_size / 512));
 		blk_queue_max_phys_segments(mq->queue, host->max_phys_segs);
 		blk_queue_max_hw_segments(mq->queue, host->max_hw_segs);
 		blk_queue_max_segment_size(mq->queue, host->max_seg_size);