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-rw-r--r--drivers/mmc/card/block.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index fe8041e619e..b25e9b6516a 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -254,6 +254,14 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
brq.data.blocks = req->nr_sectors;
/*
+ * The block layer doesn't support all sector count
+ * restrictions, so we need to be prepared for too big
+ * requests.
+ */
+ 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.