[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>

diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index 198561d..f43cdfc 100644 (file)
--- 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 aef6042..86d491b 100644 (file)
--- 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;