diff options
Diffstat (limited to 'drivers/mmc/sdhci.c')
| -rw-r--r-- | drivers/mmc/sdhci.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 5324eae6d720..e37c8149249f 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -1073,6 +1073,7 @@ static int sdhci_resume (struct pci_dev *pdev) static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) { int ret; + unsigned int version; struct sdhci_chip *chip; struct mmc_host *mmc; struct sdhci_host *host; @@ -1131,6 +1132,16 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) goto release; } + version = readw(host->ioaddr + SDHCI_HOST_VERSION); + version = (version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT; + if (version != 0) { + printk(KERN_ERR "%s: Unknown controller version (%d). " + "Cowardly refusing to continue.\n", host->slot_descr, + version); + ret = -ENODEV; + goto unmap; + } + caps = readl(host->ioaddr + SDHCI_CAPABILITIES); if ((caps & SDHCI_CAN_DO_DMA) && ((pdev->class & 0x0000FF) == 0x01)) |