From 0143f59de50eee70485be9b658e42495d72698dd Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Mon, 18 Jul 2016 15:39:28 +0900 Subject: [PATCH] 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. Signed-off-by: Chanwoo Choi --- 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) -- 2.7.4