mmc: ignore bad max block size in sdhci

Some SDHC cards report an invalid maximum block size, in these cases
assume they support block sizes up to 512 bytes instead of returning
an error.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/mmc/host/sdhci.c

@@ -1347,11 +1347,10 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
 	 */
 	mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT;
 	if (mmc->max_blk_size >= 3) {
-		printk(KERN_ERR "%s: Invalid maximum block size.\n",
+		printk(KERN_WARNING "%s: Invalid maximum block size, assuming 512\n",
 			host->slot_descr);
-		ret = -ENODEV;
-		goto unmap;
-	}
+		mmc->max_blk_size = 512;
+	} else
 		mmc->max_blk_size = 512 << mmc->max_blk_size;
 
 	/*