[PATCH v4 05/10] of: fdt: Use IS_ENABLED(CONFIG_BLK_DEV_INITRD) instead of #ifdef

[Geert Uytterhoeven <geert+renesas@glider.be>]

Replace the conditional compilation using "#ifdef CONFIG_BLK_DEV_INITRD"
by a check for "IS_ENABLED(CONFIG_BLK_DEV_INITRD)", to increase compile
coverage and to simplify the code.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v4:
  - New.
---
 drivers/of/fdt.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 1b4dd5418b44b9fb..a98e1bb9c84d9765 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -859,7 +859,6 @@ const void * __init of_flat_dt_match_machine(const void *default_match,
 	return best_data;
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
 static void __early_init_dt_declare_initrd(unsigned long start,
 					   unsigned long end)
 {
@@ -885,6 +884,9 @@ static void __init early_init_dt_check_for_initrd(unsigned long node)
 	int len;
 	const __be32 *prop;
 
+	if (!IS_ENABLED(CONFIG_BLK_DEV_INITRD))
+		return;
+
 	pr_debug("Looking for initrd properties... ");
 
 	prop = of_get_flat_dt_prop(node, "linux,initrd-start", &len);
@@ -903,11 +905,6 @@ static void __init early_init_dt_check_for_initrd(unsigned long node)
 
 	pr_debug("initrd_start=0x%llx  initrd_end=0x%llx\n", start, end);
 }
-#else
-static inline void early_init_dt_check_for_initrd(unsigned long node)
-{
-}
-#endif /* CONFIG_BLK_DEV_INITRD */
 
 /**
  * early_init_dt_check_for_elfcorehdr - Decode elfcorehdr location from flat
-- 
2.25.1