/*
* Card detection callback from host.
*/
static int mmc_detect(struct mmc_host *host)
{
int err;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
/*
* Just check if our card has been removed.
*/
err = mmc_send_status(host->card, NULL);
mmc_release_host(host);
if (err) {
mmc_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
return err;
}
/*
* Card detection callback from host.
*/
static void mmc_detect(struct mmc_host *host)
{
int err;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
/*
* Just check if our card has been removed.
*/
err = _mmc_detect_card_removed(host);
mmc_release_host(host);
if (err) {
mmc_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_power_off(host);
mmc_release_host(host);
}
}
/*
* Card detection callback from host.
*/
static void mmc_detect(struct mmc_host *host)
{
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (host->card->err_count >= ERR_TRIGGER_REINIT)
err = mmc_init_card(host, host->ocr, host->card);
/*
* Just check if our card has been removed.
*/
if (!err)
err = mmc_send_status(host->card, NULL);
mmc_release_host(host);
if (err) {
mmc_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}
/*
* When "deferred resume" fails, run another thread to stop mmcqd.
*/
static int mmc_removal_thread(void *d)
{
struct mmc_host *host = d;
mmc_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
return 0;
}
static void mmc_err_with_deferred_resume(struct mmc_host *host)
{
if (mmc_bus_needs_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_FAILS_RESUME;
kthread_run(mmc_removal_thread, host, "emmcrd");
} else {
mmc_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}
/*
* Resume callback from host.
*
* This function tries to determine if the same card is still present
* and, if so, restore all state to it.
*/
static void mmc_resume(struct mmc_host *host)
{
int err;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
err = mmc_init_card(host, host->ocr, host->card);
mmc_release_host(host);
if (err) {
mmc_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}