mmc: Allow host drivers to specify a max block size

Most controllers have an upper limit on the block size. Allow the host
drivers to specify this and make sure we avoid hitting this limit.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/mmc/at91_mci.c b/drivers/mmc/at91_mci.c
index aa152f31851e..e28850dec9ed 100644
--- a/drivers/mmc/at91_mci.c
+++ b/drivers/mmc/at91_mci.c
@@ -823,6 +823,8 @@ static int __init at91_mci_probe(struct platform_device *pdev)
         mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
         mmc->caps = MMC_CAP_BYTEBLOCK;
 
+        mmc->max_blk_size = 4095;
+
         host = mmc_priv(mmc);
         host->mmc = mmc;
         host->buffer = NULL;