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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>
wifi-calibration
Chanwoo Choi 2013-05-22 19:31:59 +09:00 committed by Greg Kroah-Hartman
parent 12e50c3054
commit ea9dd9d655
1 changed files with 1 additions and 22 deletions
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23
drivers/extcon/extcon-class.c
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@ -185,26 +185,6 @@ static ssize_t cable_state_show(struct device *dev,
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 @@ int extcon_dev_register(struct extcon_dev *edev, struct device *dev)
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;
}
}