padata: Check for valid padata instance on start

[karo-tx-linux.git] / include / linux / padata.h

diff --git a/include/linux/padata.h b/include/linux/padata.h
index 8d8406246eefb85c0941f136d1ce06f3d26521d2..e4c17f9b7c9e2b03e76e8712c5d4566974ea2e3f 100644 (file)
--- a/include/linux/padata.h
+++ b/include/linux/padata.h
@@ -126,6 +126,7 @@ struct padata_instance {
        u8                      flags;
 #define        PADATA_INIT             1
 #define        PADATA_RESET            2
+#define        PADATA_INVALID          4
 };
 
 extern struct padata_instance *padata_alloc(const struct cpumask *cpumask,
@@ -138,6 +139,6 @@ extern int padata_set_cpumask(struct padata_instance *pinst,
                              cpumask_var_t cpumask);
 extern int padata_add_cpu(struct padata_instance *pinst, int cpu);
 extern int padata_remove_cpu(struct padata_instance *pinst, int cpu);
-extern void padata_start(struct padata_instance *pinst);
+extern int padata_start(struct padata_instance *pinst);
 extern void padata_stop(struct padata_instance *pinst);
 #endif