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mmc: init mmc block devices on probe 

MMC devices accessed exclusively via the driver model were not
being initialized before being exposed as block devices, causing
issues in scenarios where the MMC device is first accessed via the
uclass block interface.

Signed-off-by: Fiach Antaw <fiach.antaw@uqconnect.edu.au>
This commit is contained in:
Fiach Antaw 2017-01-25 19:00:24 +10:00 committed by Jaehoon Chung
parent 6aca17c9b7
commit a0269bb6e8
1 changed files with 12 additions and 0 deletions
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12
drivers/mmc/mmc-uclass.c
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@ -254,6 +254,17 @@ static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
return mmc_switch_part(mmc, hwpart);
}
static int mmc_blk_probe(struct udevice *dev)
{
struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
int dev_num = block_dev->devnum;
struct mmc *mmc = find_mmc_device(dev_num);
if (!mmc)
return -ENODEV;
return mmc_init(mmc);
}
static const struct blk_ops mmc_blk_ops = {
.read = mmc_bread,
#ifndef CONFIG_SPL_BUILD
@ -267,6 +278,7 @@ U_BOOT_DRIVER(mmc_blk) = {
.name = "mmc_blk",
.id = UCLASS_BLK,
.ops = &mmc_blk_ops,
.probe = mmc_blk_probe,
};
#endif /* CONFIG_BLK */