diff options
Diffstat (limited to 'drivers/mmc/core/sdio.c')
-rw-r--r-- | drivers/mmc/core/sdio.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 24b510b743da..87e53a721a10 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -792,6 +792,14 @@ try_again: if (err) goto remove; } + + if (host->caps2 & MMC_CAP2_AVOID_3_3V && + host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { + pr_err("%s: Host failed to negotiate down from 3.3V\n", + mmc_hostname(host)); + err = -EINVAL; + goto remove; + } finish: if (!oldcard) host->card = card; |