kernel: get carrier module to prevent rmmod

Signed-off-by: Federico Vaga <federico.vaga@cern.ch>

kernel: get carrier module to prevent rmmod
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
d75b5869 · Federico Vaga · 3224767c · d75b5869
Commit d75b5869 authored May 04, 2015 by Federico Vaga
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fa-core.c kernel/fa-core.c +9 -0

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--- a/kernel/fa-core.c
+++ b/kernel/fa-core.c
@@ -524,8 +524,14 @@ int fa_probe(struct fmc_device *fmc)
 	if (err < 0)
 		goto out;

+	/* Pin the carrier */
+	if (!try_module_get(fmc->owner))
+		goto out_mod;
+
 	return 0;

+out_mod:
+	fa_free_irqs(fa);
 out:
 	while (--m, --i >= 0)
 		if (m->exit)
@@ -550,6 +556,9 @@ int fa_remove(struct fmc_device *fmc)

 	fa->carrier_op->exit(fa);

+	/* Release the carrier */
+	module_put(fmc->owner);
+
 	return 0;
 }