[PATCH] tmio_mmc: Allow 2 byte requests in 4-bit mode
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From: Yusuke Goda on 20 Jul 2010 04:00 Adjust the tmio_mmc block size check to accept 2-byte requests in 4-bit mode. Tested with the SDHI hardware block included in sh7724. Signed-off-by: Yusuke Goda <yusuke.goda.sx(a)renesas.com> --- drivers/mmc/host/tmio_mmc.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index ee7d0a5..f49d945 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -660,8 +660,8 @@ static int tmio_mmc_start_data(struct tmio_mmc_host *host, pr_debug("setup data transfer: blocksize %08x nr_blocks %d\n", data->blksz, data->blocks); - /* Hardware cannot perform 1 and 2 byte requests in 4 bit mode */ - if (data->blksz < 4 && host->mmc->ios.bus_width == MMC_BUS_WIDTH_4) { + /* Hardware cannot perform 1 byte requests in 4 bit mode */ + if (data->blksz < 2 && host->mmc->ios.bus_width == MMC_BUS_WIDTH_4) { pr_err("%s: %d byte block unsupported in 4 bit mode\n", mmc_hostname(host->mmc), data->blksz); return -EINVAL; -- 1.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |