On 07/19/2016 06:28 PM, Kever Yang wrote:

Not like the mmc-legacy which the devnum starts from 1, it starts from 0 in mmc-uclass, so the device number should be (devnum + 1) in get_mmc_num().

Signed-off-by: Kever Yang kever.yang@rock-chips.com

Changes in v2:

• add comment for get_mmc_num() in mmc.h
• update mmc_get_next_devnum()

drivers/mmc/mmc-uclass.c | 4 ++-- include/mmc.h | 6 ++++++ 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 38ced41..d0ca91b 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -111,7 +111,7 @@ struct mmc *find_mmc_device(int dev_num)

int get_mmc_num(void) {

• return max(blk_find_max_devnum(IF_TYPE_MMC), 0);

• return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);

}

int mmc_get_next_devnum(void) @@ -122,7 +122,7 @@ int mmc_get_next_devnum(void) if (ret < 0) return ret;

• return ret + 1;

• return ret;

}

struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) diff --git a/include/mmc.h b/include/mmc.h index 8f309f1..4288e59 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -503,6 +503,12 @@ void mmc_set_clock(struct mmc *mmc, uint clock); struct mmc *find_mmc_device(int dev_num); int mmc_set_dev(int dev_num); void print_mmc_devices(char separator);

+/**

• • get_mmc_num() - get the total MMC device number
• • @return number of MMC device
• */

If you add the comment for get_mmc_num(), i think you need to mention that it has what means when return 0.

@return 0 if there is no MMC device, else the number of devices.

Best Regards, Jaehoon Chung

int get_mmc_num(void); int mmc_hwpart_config(struct mmc *mmc, const struct mmc_hwpart_conf *conf, enum mmc_hwpart_conf_mode mode);