1 files changed, 7 insertions, 53 deletions

diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index 115cc21..a0e0dad 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) {