mmc: dw_mmc: set to MMC_CAP_ERASE by default

This flag needs to use the trim/discard/erase commands.
dwmmc controller enables this flag by default.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 2dfdc58bae1311dcefbe81cd2d7a5ce228b218c6..32380d5d4f6b15440497b952b035cfe3b76b74ea 100644 (file)
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2604,6 +2604,12 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
        if (host->pdata->caps)
                mmc->caps = host->pdata->caps;
 
+       /*
+        * Support MMC_CAP_ERASE by default.
+        * It needs to use trim/discard/erase commands.
+        */
+       mmc->caps |= MMC_CAP_ERASE;
+
        if (host->pdata->pm_caps)
                mmc->pm_caps = host->pdata->pm_caps;