The hardware does not support any multi-block transfers with an block-size that is not aligned. Also the driver itself does not support single block non-32bit transfers either. Ensure that the s3cmci_setup_data() returns the appropriate error if we encounter this. Signed-off-by: Ben Dooks Index: linux-2.6.26-rc8-next20080627/drivers/mmc/host/s3cmci.c =================================================================== --- linux-2.6.26-rc8-next20080627.orig/drivers/mmc/host/s3cmci.c 2008-06-30 12:38:22.000000000 +0100 +++ linux-2.6.26-rc8-next20080627/drivers/mmc/host/s3cmci.c 2008-06-30 12:38:46.000000000 +0100 @@ -808,6 +808,17 @@ static int s3cmci_setup_data(struct s3cm return 0; } + if ((data->blksz & 3) != 0) { + /* We cannot deal with unaligned blocks with more than + * one block being transfered. */ + + if (data->blocks > 1) + return -EINVAL; + + /* No support yet for non-word block transfers. */ + return -EINVAL; + } + while (readl(host->base + S3C2410_SDIDSTA) & (S3C2410_SDIDSTA_TXDATAON | S3C2410_SDIDSTA_RXDATAON)) { -- Ben (ben@fluff.org, http://www.fluff.org/) 'a smiley only costs 4 bytes' -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/