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path: root/drivers/mmc/mmc_block.c
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Diffstat (limited to 'drivers/mmc/mmc_block.c')
-rw-r--r--drivers/mmc/mmc_block.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index 86439a0bb271..95b0da6abe87 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/mmc_block.c
@@ -223,7 +223,7 @@ 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;
+ int ret = 1, sg_pos, data_size;
if (mmc_card_claim_host(card))
goto flush_queue;
@@ -283,6 +283,20 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
brq.data.sg = mq->sg;
brq.data.sg_len = blk_rq_map_sg(req->q, req, brq.data.sg);
+ if (brq.data.blocks !=
+ (req->nr_sectors >> (md->block_bits - 9))) {
+ data_size = brq.data.blocks * brq.data.blksz;
+ for (sg_pos = 0; sg_pos < brq.data.sg_len; sg_pos++) {
+ data_size -= mq->sg[sg_pos].length;
+ if (data_size <= 0) {
+ mq->sg[sg_pos].length += data_size;
+ sg_pos++;
+ break;
+ }
+ }
+ brq.data.sg_len = sg_pos;
+ }
+
mmc_wait_for_req(card->host, &brq.mrq);
if (brq.cmd.error) {
printk(KERN_ERR "%s: error %d sending read/write command\n",
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