diff options
Diffstat (limited to 'drivers/mmc/core/core.c')
| -rw-r--r-- | drivers/mmc/core/core.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index dc0cb59..0f86144 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -971,6 +971,29 @@ void mmc_release_host(struct mmc_host *host) EXPORT_SYMBOL(mmc_release_host); /* + * This is a helper function, which fetches a runtime pm reference for the + * card device and also claims the host. + */ +void mmc_get_card(struct mmc_card *card) +{ + pm_runtime_get_sync(&card->dev); + mmc_claim_host(card->host); +} +EXPORT_SYMBOL(mmc_get_card); + +/* + * This is a helper function, which releases the host and drops the runtime + * pm reference for the card device. + */ +void mmc_put_card(struct mmc_card *card) +{ + mmc_release_host(card->host); + pm_runtime_mark_last_busy(&card->dev); + pm_runtime_put_autosuspend(&card->dev); +} +EXPORT_SYMBOL(mmc_put_card); + +/* * Internal function that does the actual ios call to the host driver, * optionally printing some debug output. */ |