diff options
Diffstat (limited to 'drivers/mmc/core/sd.c')
-rw-r--r-- | drivers/mmc/core/sd.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index baf3d5da4ccb..7f87a5354f9f 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -1058,6 +1058,14 @@ retry: mmc_set_bus_width(host, MMC_BUS_WIDTH_4); } } + + 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 free_card; + } done: host->card = card; return 0; |