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path: root/drivers/mmc
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Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/core/mmc.c11
-rw-r--r--drivers/mmc/core/sd.c18
-rw-r--r--drivers/mmc/host/sdhci.c5
3 files changed, 31 insertions, 3 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index c528017d612..c2e120b11be 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -323,6 +323,17 @@ int mmc_attach_mmc(struct mmc_host *host, u32 ocr)
mmc_attach_bus(host, &mmc_ops);
+ /*
+ * Sanity check the voltages that the card claims to
+ * support.
+ */
+ if (ocr & 0x7F) {
+ printk(KERN_WARNING "%s: card claims to support voltages "
+ "below the defined range. These will be ignored.\n",
+ mmc_hostname(host));
+ ocr &= ~0x7F;
+ }
+
host->ocr = mmc_select_voltage(host, ocr);
/*
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 6c6beb48f3a..fb18b301502 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -297,6 +297,24 @@ int mmc_attach_sd(struct mmc_host *host, u32 ocr)
mmc_attach_bus(host, &mmc_sd_ops);
+ /*
+ * Sanity check the voltages that the card claims to
+ * support.
+ */
+ if (ocr & 0x7F) {
+ printk(KERN_WARNING "%s: card claims to support voltages "
+ "below the defined range. These will be ignored.\n",
+ mmc_hostname(host));
+ ocr &= ~0x7F;
+ }
+
+ if (ocr & MMC_VDD_165_195) {
+ printk(KERN_WARNING "%s: SD card claims to support the "
+ "incompletely defined 'low voltage range'. This "
+ "will be ignored.\n", mmc_hostname(host));
+ ocr &= ~MMC_VDD_165_195;
+ }
+
host->ocr = mmc_select_voltage(host, ocr);
/*
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index a57f6a3d48d..ff5bf73cdd2 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -659,8 +659,7 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
pwr = SDHCI_POWER_ON;
switch (1 << power) {
- case MMC_VDD_17_18:
- case MMC_VDD_18_19:
+ case MMC_VDD_165_195:
pwr |= SDHCI_POWER_180;
break;
case MMC_VDD_29_30:
@@ -1280,7 +1279,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
if (caps & SDHCI_CAN_VDD_300)
mmc->ocr_avail |= MMC_VDD_29_30|MMC_VDD_30_31;
if (caps & SDHCI_CAN_VDD_180)
- mmc->ocr_avail |= MMC_VDD_17_18|MMC_VDD_18_19;
+ mmc->ocr_avail |= MMC_VDD_165_195;
if (mmc->ocr_avail == 0) {
printk(KERN_ERR "%s: Hardware doesn't report any "