diff options
Diffstat (limited to 'drivers/mmc/core/mmc.c')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 4dbe3df8024b..b8aa12ced45f 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -1957,19 +1957,17 @@ static int mmc_reset(struct mmc_host *host) { struct mmc_card *card = host->card; - if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) - return -EOPNOTSUPP; - - if (!mmc_can_reset(card)) - return -EOPNOTSUPP; - - mmc_set_clock(host, host->f_init); - - host->ops->hw_reset(host); - - /* Set initial state and call mmc_set_ios */ - mmc_set_initial_state(host); - + if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && + mmc_can_reset(card)) { + /* If the card accept RST_n signal, send it. */ + mmc_set_clock(host, host->f_init); + host->ops->hw_reset(host); + /* Set initial state and call mmc_set_ios */ + mmc_set_initial_state(host); + } else { + /* Do a brute force power cycle */ + mmc_power_cycle(host, card->ocr); + } return mmc_init_card(host, card->ocr, card); } |