mmc: sunxi: Declare ERASE capability

Declare ERASE capability so we can use filesystems with the discard
option and the fstrim tool.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index dafe5001a46e..d1663b3c4143 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -990,7 +990,8 @@ static int sunxi_mmc_probe(struct platform_device *pdev)
         /* 400kHz ~ 50MHz */
         mmc->f_min              =   400000;
         mmc->f_max              = 50000000;
-        mmc->caps              |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
+        mmc->caps              |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |
+                                  MMC_CAP_ERASE;
 
         ret = mmc_of_parse(mmc);
         if (ret)