diff --git a/arch/powerpc/include/asm/fadump.h b/arch/powerpc/include/asm/fadump.h
index 526a6a6473128a81ff5b0bdfd1e8315889fa2ca4..daa44b2ef35ad0bfc6973f4870973ba0ed1e7532 100644
--- a/arch/powerpc/include/asm/fadump.h
+++ b/arch/powerpc/include/asm/fadump.h
@@ -32,4 +32,11 @@ extern int early_init_dt_scan_fw_dump(unsigned long node, const char *uname,
 				      int depth, void *data);
 extern int fadump_reserve_mem(void);
 #endif
+
+#if defined(CONFIG_FA_DUMP) && defined(CONFIG_CMA)
+void fadump_cma_init(void);
+#else
+static inline void fadump_cma_init(void) { }
+#endif
+
 #endif /* _ASM_POWERPC_FADUMP_H */
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index 3ff2da7b120b5090fe041efdebaf359bf2e32348..1866bac2340007ad3121171bb8e6fdb522e0c4fd 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -80,27 +80,23 @@ static struct cma *fadump_cma;
  * But for some reason even if it fails we still have the memory reservation
  * with us and we can still continue doing fadump.
  */
-static int __init fadump_cma_init(void)
+void __init fadump_cma_init(void)
 {
 	unsigned long long base, size;
 	int rc;
 
-	if (!fw_dump.fadump_enabled)
-		return 0;
-
+	if (!fw_dump.fadump_supported || !fw_dump.fadump_enabled ||
+			fw_dump.dump_active)
+		return;
 	/*
 	 * Do not use CMA if user has provided fadump=nocma kernel parameter.
-	 * Return 1 to continue with fadump old behaviour.
 	 */
-	if (fw_dump.nocma)
-		return 1;
+	if (fw_dump.nocma || !fw_dump.boot_memory_size)
+		return;
 
 	base = fw_dump.reserve_dump_area_start;
 	size = fw_dump.boot_memory_size;
 
-	if (!size)
-		return 0;
-
 	rc = cma_init_reserved_mem(base, size, 0, "fadump_cma", &fadump_cma);
 	if (rc) {
 		pr_err("Failed to init cma area for firmware-assisted dump,%d\n", rc);
@@ -110,7 +106,7 @@ static int __init fadump_cma_init(void)
 		 * blocked from production system usage.  Hence return 1,
 		 * so that we can continue with fadump.
 		 */
-		return 1;
+		return;
 	}
 
 	/*
@@ -127,10 +123,7 @@ static int __init fadump_cma_init(void)
 		cma_get_size(fadump_cma),
 		(unsigned long)cma_get_base(fadump_cma) >> 20,
 		fw_dump.reserve_dump_area_size);
-	return 1;
 }
-#else
-static int __init fadump_cma_init(void) { return 1; }
 #endif /* CONFIG_CMA */
 
 /* Scan the Firmware Assisted dump configuration details. */
@@ -647,8 +640,6 @@ int __init fadump_reserve_mem(void)
 
 		pr_info("Reserved %lldMB of memory at %#016llx (System RAM: %lldMB)\n",
 			(size >> 20), base, (memblock_phys_mem_size() >> 20));
-
-		ret = fadump_cma_init();
 	}
 
 	return ret;
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 03eaad5949f1415278a3cf10201d1eb872552e78..d43db8150767bedd073e2847c07cd33f0da5b51d 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -988,9 +988,11 @@ void __init setup_arch(char **cmdline_p)
 	initmem_init();
 
 	/*
-	 * Reserve large chunks of memory for use by CMA for KVM and hugetlb. These must
-	 * be called after initmem_init(), so that pageblock_order is initialised.
+	 * Reserve large chunks of memory for use by CMA for fadump, KVM and
+	 * hugetlb. These must be called after initmem_init(), so that
+	 * pageblock_order is initialised.
 	 */
+	fadump_cma_init();
 	kvm_cma_reserve();
 	gigantic_hugetlb_cma_reserve();