diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/card/block.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index c0cb225bbb47..a1cb21f95302 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -1030,13 +1030,20 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, if (brq->data.blocks > card->host->max_blk_count) brq->data.blocks = card->host->max_blk_count; - /* - * After a read error, we redo the request one sector at a time - * in order to accurately determine which sectors can be read - * successfully. - */ - if (disable_multi && brq->data.blocks > 1) - brq->data.blocks = 1; + if (brq->data.blocks > 1) { + /* + * After a read error, we redo the request one sector + * at a time in order to accurately determine which + * sectors can be read successfully. + */ + if (disable_multi) + brq->data.blocks = 1; + + /* Some controllers can't do multiblock reads due to hw bugs */ + if (card->host->caps2 & MMC_CAP2_NO_MULTI_READ && + rq_data_dir(req) == READ) + brq->data.blocks = 1; + } if (brq->data.blocks > 1 || do_rel_wr) { /* SPI multiblock writes terminate using a special |