From: Jerry Huang <Chang-Ming.Huang@xxxxxxxxxxxxx> power on before detecting card. The driver will not get the right status when using the callback function 'get_cd' to check if the card is present because the power is not on. Therefore, the controller must be power on before detecting the card status. Signed-off-by: Jerry Huang <Chang-Ming.Huang@xxxxxxxxxxxxx> --- drivers/mmc/core/core.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 7dab2e5..7b3aee1 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1067,12 +1067,13 @@ void mmc_rescan(struct work_struct *work) */ mmc_bus_put(host); + mmc_power_up(host); + if (host->ops->get_cd && host->ops->get_cd(host) == 0) goto out; mmc_claim_host(host); - mmc_power_up(host); mmc_go_idle(host); mmc_send_if_cond(host, host->ocr_avail); -- 1.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
