[PATCH master 1/3] mci: core: fix fallback when eMMC DDR52 is not possible

[Ahmad Fatoum]

mci_mmc_select_hs_ddr() will try DDR52 and if that fails, revert to
SDR operation. In that case, it returns the bus width, which would
be forwarded as if it were an error code:

  WARNING: mmc2: Card's startup fails with 3

Fix this by translating successful return values to 0 in
mci_startup_mmc().

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 drivers/mci/mci-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index 1d383e6449e9..57b4c5b99c9c 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -1566,7 +1566,7 @@ static int mci_startup_mmc(struct mci *mci)
 		}
 	}
 
-	return ret;
+	return ret >= MMC_BUS_WIDTH_1 ? 0 : ret;
 }
 
 /**
-- 
2.39.2