@@ -388,20 +388,20 @@ static ssize_t show_ideapad_cam(struct device *dev,
err = read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result);
if (err)
return err;
- return sysfs_emit(buf, "%lu\n", result);
+ return sysfs_emit(buf, "%d\n", !!result);
}
static ssize_t store_ideapad_cam(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- int ret, state;
struct ideapad_private *priv = dev_get_drvdata(dev);
+ bool state;
+ int ret;
- if (!count)
- return 0;
- if (sscanf(buf, "%i", &state) != 1)
- return -EINVAL;
+ ret = kstrtobool(buf, &state);
+ if (ret)
+ return ret;
ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
if (ret)
return ret;
@@ -428,14 +428,14 @@ static ssize_t store_ideapad_fan(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- int ret, state;
struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned int state;
+ int ret;
- if (!count)
- return 0;
- if (sscanf(buf, "%i", &state) != 1)
- return -EINVAL;
- if (state < 0 || state > 4 || state == 3)
+ ret = kstrtouint(buf, 0, &state);
+ if (ret)
+ return ret;
+ if (state > 4 || state == 3)
return -EINVAL;
ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
if (ret)
@@ -456,7 +456,7 @@ static ssize_t touchpad_show(struct device *dev,
err = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result);
if (err)
return err;
- return sysfs_emit(buf, "%lu\n", result);
+ return sysfs_emit(buf, "%d\n", !!result);
}
/* Switch to RO for now: It might be revisited in the future */
@@ -491,7 +491,7 @@ static ssize_t conservation_mode_show(struct device *dev,
err = method_gbmd(priv->adev->handle, &result);
if (err)
return err;
- return sysfs_emit(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result));
+ return sysfs_emit(buf, "%d\n", !!test_bit(BM_CONSERVATION_BIT, &result));
}
static ssize_t conservation_mode_store(struct device *dev,
@@ -529,7 +529,7 @@ static ssize_t fn_lock_show(struct device *dev,
return fail;
result = hals;
- return sysfs_emit(buf, "%u\n", test_bit(HA_FNLOCK_BIT, &result));
+ return sysfs_emit(buf, "%d\n", !!test_bit(HA_FNLOCK_BIT, &result));
}
static ssize_t fn_lock_store(struct device *dev,
Do not handle zero length buffer separately. Use kstrtouint() instead of sscanf(). Use kstrtobool() in store_ideapad_cam(). These introduce minor ABI changes, but it is expected that no users rely on the previous behavior. Thus the change is deemed justifed. Additionally, use `!!` to convert to `int` and use the "%d" format specifier in sysfs_emit() for boolean-like attributes. Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>