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 95fe0fdac48..302dd5bde75 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -328,6 +328,8 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data) /* Sanity checks */ BUG_ON(data->blksz * data->blocks > 524288); + BUG_ON(data->blksz > host->max_block); + BUG_ON(data->blocks > 65535); /* timeout in us */ target_timeout = data->timeout_ns / 1000 + @@ -1158,6 +1160,15 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) if (caps & SDHCI_TIMEOUT_CLK_UNIT) host->timeout_clk *= 1000; + host->max_block = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT; + if (host->max_block >= 3) { + printk(KERN_ERR "%s: Invalid maximum block size.\n", + host->slot_descr); + ret = -ENODEV; + goto unmap; + } + host->max_block = 512 << host->max_block; + /* * Set host parameters. */ |