The sysfs enabled value is a boolean, so kstrtobool() is a better fit
for parsing the input string since it does the range checking for us.
Suggested-by: Petr Mladek <pmladek@xxxxxxxx>
Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
---
kernel/livepatch/core.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index 6a137e1..8ca8a0e 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -408,26 +408,23 @@ static ssize_t enabled_store(struct kobject *kobj, struct kobj_attribute *attr,
{
struct klp_patch *patch;
int ret;
- unsigned long val;
+ bool enabled;
- ret = kstrtoul(buf, 10, &val);
+ ret = kstrtobool(buf, &enabled);
if (ret)
return -EINVAL;
- if (val > 1)
- return -EINVAL;
-
patch = container_of(kobj, struct klp_patch, kobj);
mutex_lock(&klp_mutex);
- if (patch->enabled == val) {
+ if (patch->enabled == enabled) {
/* already in requested state */
ret = -EINVAL;
goto err;
}
- if (val) {
+ if (enabled) {
ret = __klp_enable_patch(patch);
if (ret)
goto err;
--
2.7.4
--
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