mmc: Allow host drivers to specify max block count

Many controllers have an upper limit on the number of blocks that can be
transferred in one request. Allow the host drivers to specify this and make
sure we avoid hitting this limit.

Also change the max_sectors field to avoid confusion. This makes it map
less directly to the block layer limits, but as they didn't apply directly
on MMC cards anyway, this isn't a great loss.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/mmc/imxmmc.c b/drivers/mmc/imxmmc.c
index 2107f8a8605e..b060d4bfba29 100644
--- a/drivers/mmc/imxmmc.c
+++ b/drivers/mmc/imxmmc.c
@@ -958,9 +958,10 @@ static int imxmci_probe(struct platform_device *pdev)
         /* MMC core transfer sizes tunable parameters */
         mmc->max_hw_segs = 64;
         mmc->max_phys_segs = 64;
-        mmc->max_sectors = 64;          /* default 1 << (PAGE_CACHE_SHIFT - 9) */
         mmc->max_seg_size = 64*512;     /* default PAGE_CACHE_SIZE */
+        mmc->max_req_size = 64*512;     /* default PAGE_CACHE_SIZE */
         mmc->max_blk_size = 2048;
+        mmc->max_blk_count = 65535;
 
         host = mmc_priv(mmc);
         host->mmc = mmc;