Merge pull request raymanfx#1 from invisiblek/master

check if patch is already applied first

Author: raymanfx

cve_check.py

@@ -80,23 +80,23 @@ def parse_linux_version(kernel_repo):
 
 def basic_check(kernel_repo, cve_patch):
 
-    # try to apply the patch normally
-    cmd = ["git", "-C", kernel_repo, "apply", "--3way", "--check", cve_patch]
+    # try to apply the patch in reverse
+    cmd = ["git", "-C", kernel_repo, "apply", "--3way", "--check", "--reverse",
+           cve_patch]
     try:
         with open(os.devnull, 'w') as silence:
             subprocess.check_output(cmd, stderr=silence)
-            return 0
+            return 1
     except subprocess.CalledProcessError:
-        # we still have one more optiion (reverse patch)
+        # not already applied, attempt to apply it
         pass
 
-    # try to apply the patch in reverse
-    cmd = ["git", "-C", kernel_repo, "apply", "--3way", "--check", "--reverse",
-           cve_patch]
+    # try to apply the patch normally
+    cmd = ["git", "-C", kernel_repo, "apply", "--3way", "--check", cve_patch]
     try:
         with open(os.devnull, 'w') as silence:
             subprocess.check_output(cmd, stderr=silence)
-            return 1
+            return 0
     except subprocess.CalledProcessError:
         # we ran out of options, probably need the advanced check..
         return 2