[PATCH 25/51] extcon: Remove the state_store() to prevent the wrong access

Kishon Vijay Abraham I
2016-09-14T07:45:20Z

From: Chanwoo Choi <cw00.choi@samsung.com>

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.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/extcon/extcon.c | 21 +--------------------
1 file changed, 1 insertion(+), 20 deletions(-)

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 319659c..ad5e454 100644
--- 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)
--
1.7.9.5