diff options
Diffstat (limited to 'drivers/mmc/core/sdio.c')
| -rw-r--r-- | drivers/mmc/core/sdio.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 1a726aef211d..aa0719a4dfd1 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -584,10 +584,19 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, { struct mmc_card *card; int err; + int retries = 10; BUG_ON(!host); WARN_ON(!host->claimed); +try_again: + if (!retries) { + pr_warning("%s: Skipping voltage switch\n", + mmc_hostname(host)); + ocr &= ~R4_18V_PRESENT; + host->ocr &= ~R4_18V_PRESENT; + } + /* * Inform the card of the voltage */ @@ -646,9 +655,16 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, * systems that claim 1.8v signalling in fact do not support * it. */ - if ((ocr & R4_18V_PRESENT) && mmc_host_uhs(host)) { + if (!powered_resume && (ocr & R4_18V_PRESENT) && mmc_host_uhs(host)) { err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); - if (err) { + if (err == -EAGAIN) { + sdio_reset(host); + mmc_go_idle(host); + mmc_send_if_cond(host, host->ocr_avail); + mmc_remove_card(card); + retries--; + goto try_again; + } else if (err) { ocr &= ~R4_18V_PRESENT; host->ocr &= ~R4_18V_PRESENT; } |