Do not handle zero length buffer separately. Use kstrtouint() instead
of sscanf().
Signed-off-by: Barnabás Pőcze <pobrn@xxxxxxxxxxxxxx>
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index b6b5a508a8b8..a615c42d1beb 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -363,13 +363,13 @@ static ssize_t store_ideapad_cam(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- int ret, state;
+ int ret;
struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned int state;
- if (!count)
- return 0;
- if (sscanf(buf, "%i", &state) != 1)
- return -EINVAL;
+ ret = kstrtouint(buf, 0, &state);
+ if (ret)
+ return ret;
ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
if (ret)
return ret;
@@ -396,14 +396,14 @@ static ssize_t store_ideapad_fan(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- int ret, state;
+ int ret;
struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned int state;
- 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)
--
2.29.2
