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>
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@ -185,26 +185,6 @@ static ssize_t cable_state_show(struct device *dev,
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cable->cable_index));
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}
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static ssize_t cable_state_store(struct device *dev,
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struct device_attribute *attr, const char *buf,
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size_t count)
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{
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struct extcon_cable *cable = container_of(attr, struct extcon_cable,
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attr_state);
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int ret, state;
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ret = sscanf(buf, "%d", &state);
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if (ret == 0)
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ret = -EINVAL;
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else
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ret = extcon_set_cable_state_(cable->edev, cable->cable_index,
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state);
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if (ret < 0)
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return ret;
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return count;
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}
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/**
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* extcon_update_state() - Update the cable attach states of the extcon device
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* only for the masked bits.
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@ -665,9 +645,8 @@ int extcon_dev_register(struct extcon_dev *edev, struct device *dev)
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sysfs_attr_init(&cable->attr_state.attr);
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cable->attr_state.attr.name = "state";
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cable->attr_state.attr.mode = 0644;
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cable->attr_state.attr.mode = 0444;
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cable->attr_state.show = cable_state_show;
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cable->attr_state.store = cable_state_store;
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}
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}
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