mmc: fix sdio timeout calculation

SDIO doesn't have a CSD so it uses different timeout values than
SD memory.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 07c03cb677b6..9d29bed820a1 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -232,6 +232,15 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
         unsigned int mult;
 
         /*
+         * SDIO cards only define an upper 1 s limit on access.
+         */
+        if (mmc_card_sdio(card)) {
+                data->timeout_ns = 1000000000;
+                data->timeout_clks = 0;
+                return;
+        }
+
+        /*
          * SD cards use a 100 multiplier rather than 10
          */
         mult = mmc_card_sd(card) ? 100 : 10;