UPSTREAM: extcon: Remove the state_store() to prevent the wrong access

This patch removes the state_store() which change the state of external
connectors with bit masking on user-space. It is wrong access to modify
the change the state of external connectors.

Change-Id: I635e30e2a22ddc313ed90dc7ab0f7fdaa271ed1d
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
(cherry picked from commit eeb820116207aa5dd71edbc0b8f0eaf3b20d77a1)

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 540f7a0b0559107bade63824d96aeff02634e688..9c7bd53a9f657d6da4548a6b2a097d2c2b08e8f0 100644 (file)
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -174,26 +174,7 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
 
        return count;
 }
-
-static ssize_t state_store(struct device *dev, struct device_attribute *attr,
-                          const char *buf, size_t count)
-{
-       u32 state;
-       ssize_t ret = 0;
-       struct extcon_dev *edev = dev_get_drvdata(dev);
-
-       ret = sscanf(buf, "0x%x", &state);
-       if (ret == 0)
-               ret = -EINVAL;
-       else
-               ret = extcon_set_state(edev, state);
-
-       if (ret < 0)
-               return ret;
-
-       return count;
-}
-static DEVICE_ATTR_RW(state);
+static DEVICE_ATTR_RO(state);
 
 static ssize_t name_show(struct device *dev, struct device_attribute *attr,
                char *buf)