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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-09 10:25:08 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-09 10:25:08 +0300 |
| commit | a7d247f5fb3a8c95e70c726bc3f02d55ef6aaeea (patch) | |
| tree | 240a3aed8a08e02ad5157312b412018522213b83 /drivers/mmc/core | |
| parent | 46b723dd867d599420fb640c0eaf2a866ef721d4 (diff) | |
| parent | 41591b38f5f8f78344954b68582b5f00e56ffe61 (diff) | |
| download | linux-a7d247f5fb3a8c95e70c726bc3f02d55ef6aaeea.tar.xz | |
Merge branch 'fixes' into next
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/block.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index a0b9102c4c6e..e201ccb3fda4 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -1371,6 +1371,16 @@ static void mmc_blk_data_prep(struct mmc_queue *mq, struct mmc_queue_req *mqrq, if (brq->data.blocks > 1) { /* + * Some SD cards in SPI mode return a CRC error or even lock up + * completely when trying to read the last block using a + * multiblock read command. + */ + if (mmc_host_is_spi(card->host) && (rq_data_dir(req) == READ) && + (blk_rq_pos(req) + blk_rq_sectors(req) == + get_capacity(md->disk))) + brq->data.blocks--; + + /* * After a read error, we redo the request one sector * at a time in order to accurately determine which * sectors can be read successfully. |