The ext4 file system requires log2blksz to be set. So when setting the
block size on the block descriptor we should fill this field too.

This fixes a problem with EFI block devices providing ext4 partitions, cf.
https://lists.denx.de/pipermail/u-boot/2019-October/387702.html.

Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
 drivers/block/blk-uclass.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index e8f58b3f5e..ca8978f0e1 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -580,6 +580,7 @@ int blk_create_device(struct udevice *parent, const char 
*drv_name,
        desc = dev_get_uclass_platdata(dev);
        desc->if_type = if_type;
        desc->blksz = blksz;
+       desc->log2blksz = LOG2(desc->blksz);
        desc->lba = lba;
        desc->part_type = PART_TYPE_UNKNOWN;
        desc->bdev = dev;
--
2.23.0

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