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Diffstat (limited to 'drivers/mmc/core/core.c')
| -rw-r--r-- | drivers/mmc/core/core.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 63672aba0e98..bcb507771eeb 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1357,6 +1357,16 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr) { int bit; + /* + * Sanity check the voltages that the card claims to + * support. + */ + if (ocr & 0x7F) { + dev_warn(mmc_dev(host), + "card claims to support voltages below defined range\n"); + ocr &= ~0x7F; + } + ocr &= host->ocr_avail; if (!ocr) { dev_warn(mmc_dev(host), "no support for card's volts\n"); |