1 files changed, 7 insertions, 53 deletions

diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index 115cc21094b9..a0e0dad1b419 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/mmc_block.c
@@ -30,6 +30,7 @@
 #include <linux/mutex.h>
 
 #include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
 #include <linux/mmc/protocol.h>
 
 #include <asm/system.h>
@@ -171,8 +172,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 
                 brq.cmd.arg = req->sector << 9;
                 brq.cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-                brq.data.timeout_ns = card->csd.tacc_ns * 10;
-                brq.data.timeout_clks = card->csd.tacc_clks * 10;
                 brq.data.blksz_bits = md->block_bits;
                 brq.data.blksz = 1 << md->block_bits;
                 brq.data.blocks = req->nr_sectors >> (md->block_bits - 9);
@@ -180,6 +179,8 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
                 brq.stop.arg = 0;
                 brq.stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
 
+                mmc_set_data_timeout(&brq.data, card, rq_data_dir(req) != READ);
+
                 if (rq_data_dir(req) == READ) {
                         brq.cmd.opcode = brq.data.blocks > 1 ? MMC_READ_MULTIPLE_BLOCK : MMC_READ_SINGLE_BLOCK;
                         brq.data.flags |= MMC_DATA_READ;
@@ -187,12 +188,6 @@ 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) {
@@ -324,52 +319,11 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
         md->read_only = mmc_blk_readonly(card);
 
         /*
-         * Figure out a workable block size.  MMC cards have:
-         *  - two block sizes, one for read and one for write.
-         *  - may support partial reads and/or writes
-         *    (allows block sizes smaller than specified)
-         */
-        md->block_bits = card->csd.read_blkbits;
-        if (card->csd.write_blkbits != card->csd.read_blkbits) {
-                if (card->csd.write_blkbits < card->csd.read_blkbits &&
-                    card->csd.read_partial) {
-                        /*
-                         * write block size is smaller than read block
-                         * size, but we support partial reads, so choose
-                         * the smaller write block size.
-                         */
-                        md->block_bits = card->csd.write_blkbits;
-                } else if (card->csd.write_blkbits > card->csd.read_blkbits &&
-                           card->csd.write_partial) {
-                        /*
-                         * read block size is smaller than write block
-                         * size, but we support partial writes.  Use read
-                         * block size.
-                         */
-                } else {
-                        /*
-                         * We don't support this configuration for writes.
-                         */
-                        printk(KERN_ERR "%s: unable to select block size for "
-                                "writing (rb%u wb%u rp%u wp%u)\n",
-                                mmc_card_id(card),
-                                1 << card->csd.read_blkbits,
-                                1 << card->csd.write_blkbits,
-                                card->csd.read_partial,
-                                card->csd.write_partial);
-                        md->read_only = 1;
-                }
-        }
-
-        /*
-         * Refuse to allow block sizes smaller than 512 bytes.
+         * Both SD and MMC specifications state (although a bit
+         * unclearly in the MMC case) that a block size of 512
+         * bytes must always be supported by the card.
          */
-        if (md->block_bits < 9) {
-                printk(KERN_ERR "%s: unable to support block size %u\n",
-                        mmc_card_id(card), 1 << md->block_bits);
-                ret = -EINVAL;
-                goto err_kfree;
-        }
+        md->block_bits = 9;
 
         md->disk = alloc_disk(1 << MMC_SHIFT);
         if (md->disk == NULL) {