diff options
| author | Chanwoo Choi <cw00.choi@samsung.com> | 2013-05-22 19:31:59 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-17 16:02:33 -0700 |
| commit | ea9dd9d655adf16b083b79ad84e5b012543f659f (patch) | |
| tree | 1f39bf1ed34b75e404fc96ad2fe1847aeec294ee | |
| parent | 12e50c30545b74ca8b6ef7f442b826fed155193f (diff) | |
| download | linux-ea9dd9d655adf16b083b79ad84e5b012543f659f.tar.bz2 | |
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>
| -rw-r--r-- | drivers/extcon/extcon-class.c | 23 |
1 files changed, 1 insertions, 22 deletions
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c index 60adc04b0561..a5a03ae069ee 100644 --- a/drivers/extcon/extcon-class.c +++ b/drivers/extcon/extcon-class.c @@ -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; } } |