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path: root/drivers/mmc/card
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-rw-r--r--drivers/mmc/card/block.c23
-rw-r--r--drivers/mmc/card/queue.c20
2 files changed, 15 insertions, 28 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index ebc8b9d7761..d73cac84d9f 100644
--- a/drivers/mmc/card/block.c
+++ b/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/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index 3dee97e7d16..5c8f037dca6 100644
--- a/drivers/mmc/card/queue.c
+++ b/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);