[U-Boot] [PATCH 1/8] cmd: cpu: fix NULL cpu feature prints

[Álvaro Fernández Rojas]

Commit 740d5d3 added two new features but only one feature name,
which results in NULL prints when device_id feature is selected.
Fix this by not printing features without a corresponding name.

Before:
	HG556a # cpu detail
	 -1: cpu at 0	BCM6358A1
		ID = 0, freq = 300 MHz: L1 cache, MMU, NULL
		Device ID 0x2a010
	 -1: cpu at 1	BCM6358A1
		ID = 1, freq = 300 MHz: L1 cache, MMU, NULL
		Device ID 0x2a010
After:
	HG556a # cpu detail
	 -1: cpu at 0	BCM6358A1
		ID = 0, freq = 300 MHz: L1 cache, MMU
		Device ID 0x2a010
	 -1: cpu at 1	BCM6358A1
		ID = 1, freq = 300 MHz: L1 cache, MMU
		Device ID 0x2a010

Signed-off-by: Álvaro Fernández Rojas <noltari at gmail.com>
---
 cmd/cpu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cmd/cpu.c b/cmd/cpu.c
index bc4dc5c..14053d2 100644
--- a/cmd/cpu.c
+++ b/cmd/cpu.c
@@ -52,7 +52,8 @@ static int print_cpu_list(bool detail)
 		print_freq(info.cpu_freq, "");
 		first = true;
 		for (i = 0; i < CPU_FEAT_COUNT; i++) {
-			if (info.features & (1 << i)) {
+			if (info.features & (1 << i) &&
+			    cpu_feature_name[i] != NULL) {
 				printf("%s%s", first ? ": " : ", ",
 				       cpu_feature_name[i]);
 				first = false;
-- 
2.1.4