diff options
Diffstat (limited to 'drivers/mmc/core/block.c')
-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, | |||
1371 | 1371 | ||
1372 | if (brq->data.blocks > 1) { | 1372 | if (brq->data.blocks > 1) { |
1373 | /* | 1373 | /* |
1374 | * Some SD cards in SPI mode return a CRC error or even lock up | ||
1375 | * completely when trying to read the last block using a | ||
1376 | * multiblock read command. | ||
1377 | */ | ||
1378 | if (mmc_host_is_spi(card->host) && (rq_data_dir(req) == READ) && | ||
1379 | (blk_rq_pos(req) + blk_rq_sectors(req) == | ||
1380 | get_capacity(md->disk))) | ||
1381 | brq->data.blocks--; | ||
1382 | |||
1383 | /* | ||
1374 | * After a read error, we redo the request one sector | 1384 | * After a read error, we redo the request one sector |
1375 | * at a time in order to accurately determine which | 1385 | * at a time in order to accurately determine which |
1376 | * sectors can be read successfully. | 1386 | * sectors can be read successfully. |