[PATCH i-g-t v2 2/4] lib/igt_kmod.c: check if module is builtin before attempting to unload it

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This change makes `igt_module_unload_r` safer as it checks whether the
module can be unloaded before attempting it.

Signed-off-by: Isabella Basso <isabbasso@xxxxxxxxxx>
---
 lib/igt_kmod.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/igt_kmod.c b/lib/igt_kmod.c
index bb6cb7bb..97cac7f5 100644
--- a/lib/igt_kmod.c
+++ b/lib/igt_kmod.c
@@ -256,6 +256,9 @@ static int igt_kmod_unload_r(struct kmod_module *kmod, unsigned int flags)
 	struct kmod_list *holders, *pos;
 	int err = 0;
 
+	if (kmod_module_get_initstate(kmod) == KMOD_MODULE_BUILTIN)
+		return err;
+
 	holders = kmod_module_get_holders(kmod);
 	kmod_list_foreach(pos, holders) {
 		struct kmod_module *it = kmod_module_get_module(pos);
-- 
2.37.2




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