num_slots comes from pdata if existing, otherwise from
dw_mci_parse_dt which make it at least one slot. If
num_slots is less than 1 for the existing pdata case,
current code return -ENODEV. But dw_mci_probe seems to
treat this a optional case as it will call SDMMC_GET_SLOT_NUM
if no slot assigned.

Signed-off-by: Shawn Lin <shawn....@rock-chips.com>

---

 drivers/mmc/host/dw_mmc.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 7128351..a116ec6 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2949,12 +2949,6 @@ int dw_mci_probe(struct dw_mci *host)
                }
        }
 
-       if (host->pdata->num_slots < 1) {
-               dev_err(host->dev,
-                       "Platform data must supply num_slots.\n");
-               return -ENODEV;
-       }
-
        host->biu_clk = devm_clk_get(host->dev, "biu");
        if (IS_ERR(host->biu_clk)) {
                dev_dbg(host->dev, "biu clock not available\n");
-- 
2.3.7


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