extcon: Change permission 'state' sysfs entry (rw -> r)
This patch change permission from read/write to only read.
The specific process in the user-space couldn't change the state
of cable when cable is attached or detached.
- /sys/class/extcon/[devine name]/state
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index 60adc04..a5a03ae 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -185,26 +185,6 @@
cable->cable_index));
}
-static ssize_t cable_state_store(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- struct extcon_cable *cable = container_of(attr, struct extcon_cable,
- attr_state);
- int ret, state;
-
- ret = sscanf(buf, "%d", &state);
- if (ret == 0)
- ret = -EINVAL;
- else
- ret = extcon_set_cable_state_(cable->edev, cable->cable_index,
- state);
-
- if (ret < 0)
- return ret;
- return count;
-}
-
/**
* extcon_update_state() - Update the cable attach states of the extcon device
* only for the masked bits.
@@ -665,9 +645,8 @@
sysfs_attr_init(&cable->attr_state.attr);
cable->attr_state.attr.name = "state";
- cable->attr_state.attr.mode = 0644;
+ cable->attr_state.attr.mode = 0444;
cable->attr_state.show = cable_state_show;
- cable->attr_state.store = cable_state_store;
}
}