3 files changed, 9 insertions, 0 deletions

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index da6ddd910fc5..05aa4d6b4f24 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -549,6 +549,7 @@ static void mmc_decode_csd(struct mmc_card *card)
                 csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
                 csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
                 csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
+                csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
                 csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
                 csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
         } else {
@@ -583,6 +584,7 @@ static void mmc_decode_csd(struct mmc_card *card)
                 csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
                 csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
                 csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
+                csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
                 csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
                 csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
         }
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index 8eb2a2ede64b..06bd1f4cb9b1 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/mmc_block.c
@@ -187,6 +187,12 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
                         brq.cmd.opcode = MMC_WRITE_BLOCK;
                         brq.data.flags |= MMC_DATA_WRITE;
                         brq.data.blocks = 1;
+
+                        /*
+                         * Scale up the timeout by the r2w factor
+                         */
+                        brq.data.timeout_ns <<= card->csd.r2w_factor;
+                        brq.data.timeout_clks <<= card->csd.r2w_factor;
                 }
 
                 if (brq.data.blocks > 1) {
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 30dd978c1ec8..991a37382a22 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -28,6 +28,7 @@ struct mmc_csd {
         unsigned short          cmdclass;
         unsigned short          tacc_clks;
         unsigned int            tacc_ns;
+        unsigned int            r2w_factor;
         unsigned int            max_dtr;
         unsigned int            read_blkbits;
         unsigned int            write_blkbits;