[PATCH 2/4] livepatch: use list_is_first()

[Geliang Tang]

For better readability, use list_is_first() instead of open-coded.

Signed-off-by: Geliang Tang <geliangtang@xxxxxxx>
---
 kernel/livepatch/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index bc2c85c..be64106 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -479,7 +479,7 @@ static int __klp_enable_patch(struct klp_patch *patch)
 		return -EINVAL;
 
 	/* enforce stacking: only the first disabled patch can be enabled */
-	if (patch->list.prev != &klp_patches &&
+	if (!list_is_first(&patch->list, &klp_patches) &&
 	    list_prev_entry(patch, list)->state == KLP_DISABLED)
 		return -EBUSY;
 
-- 
2.5.0


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