[MMC] Add DATA_MULTI flag

Some hosts need to know that a transfer will be multi-block.
Add a data flag to indicate multiple data block transfers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 8 insertions, 1 deletions

diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index 198561d21710..f43cdfcbfd2c 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/mmc_block.c
@@ -200,7 +200,13 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
                         brq.data.flags |= MMC_DATA_WRITE;
                         brq.data.blocks = 1;
                 }
-                brq.mrq.stop = brq.data.blocks > 1 ? &brq.stop : NULL;
+
+                if (brq.data.blocks > 1) {
+                        brq.data.flags |= MMC_DATA_MULTI;
+                        brq.mrq.stop = &brq.stop;
+                } else {
+                        brq.mrq.stop = NULL;
+                }
 
                 brq.data.sg = mq->sg;
                 brq.data.sg_len = blk_rq_map_sg(req->q, req, brq.data.sg);
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index aef6042f8f0b..86d491b3b73f 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -64,6 +64,7 @@ struct mmc_data {
 #define MMC_DATA_WRITE  (1 << 8)
 #define MMC_DATA_READ   (1 << 9)
 #define MMC_DATA_STREAM (1 << 10)
+#define MMC_DATA_MULTI  (1 << 11)
 
         unsigned int            bytes_xfered;