[PATCH 13/18] MMC: OMAP: Check the get_cover_state function pointerif not set

[Carlos Aguiar]

From: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>

If the get_cover_state is not set, it occurs the oops.

Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
 drivers/mmc/host/omap.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 9ac1066..0e7ceb0 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -236,7 +236,10 @@ static void mmc_omap_release_slot(struct mmc_omap_slot *slot)
 static inline
 int mmc_omap_cover_is_open(struct mmc_omap_slot *slot)
 {
-	return slot->pdata->get_cover_state(mmc_dev(slot->mmc), slot->id);
+	if (slot->pdata->get_cover_state)
+		return slot->pdata->get_cover_state(mmc_dev(slot->mmc),
+						    slot->id);
+	return 0;
 }
 
 static ssize_t
-- 1.5.3.GIT

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