mmc: Allow host drivers to specify max block count

[powerpc.git] / drivers / mmc / wbsd.c

diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/wbsd.c
index 7a28267..cf16e44 100644 (file)
--- a/drivers/mmc/wbsd.c
+++ b/drivers/mmc/wbsd.c
@@ -1343,16 +1343,27 @@ static int __devinit wbsd_alloc_mmc(struct device *dev)
        mmc->max_phys_segs = 128;
 
        /*
-        * Maximum number of sectors in one transfer. Also limited by 64kB
-        * buffer.
+        * Maximum request size. Also limited by 64KiB buffer.
         */
-       mmc->max_sectors = 128;
+       mmc->max_req_size = 65536;
 
        /*
         * Maximum segment size. Could be one segment with the maximum number
-        * of segments.
+        * of bytes.
         */
-       mmc->max_seg_size = mmc->max_sectors * 512;
+       mmc->max_seg_size = mmc->max_req_size;
+
+       /*
+        * Maximum block size. We have 12 bits (= 4095) but have to subtract
+        * space for CRC. So the maximum is 4095 - 4*2 = 4087.
+        */
+       mmc->max_blk_size = 4087;
+
+       /*
+        * Maximum block count. There is no real limit so the maximum
+        * request size will be the only restriction.
+        */
+       mmc->max_blk_count = mmc->max_req_size;
 
        dev_set_drvdata(dev, mmc);