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@xxxxxxxxxxx>
---
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
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