[PATCH 1/3] video: sunxi: Change sunxi_get_mon_desc() to not return NULL for the default case

[Bin Meng <bmeng.cn@gmail.com>]

When building with gcc 9.2.0, the following build warning was seen:

  drivers/video/sunxi/sunxi_display.c: In function 'video_hw_init':
  drivers/video/sunxi/sunxi_display.c:1217:2:
    error: '%s' directive argument is null [-Werror=format-overflow=]

Change sunxi_get_mon_desc() to not return NULL for the default case,
to fix the compiler warning.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
---

 drivers/video/sunxi/sunxi_display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/sunxi/sunxi_display.c b/drivers/video/sunxi/sunxi_display.c
index 31f0aa7..5679d83 100644
--- a/drivers/video/sunxi/sunxi_display.c
+++ b/drivers/video/sunxi/sunxi_display.c
@@ -1024,7 +1024,7 @@ static const char *sunxi_get_mon_desc(enum sunxi_monitor monitor)
 	case sunxi_monitor_composite_pal_m:	return "composite-pal-m";
 	case sunxi_monitor_composite_pal_nc:	return "composite-pal-nc";
 	}
-	return NULL; /* never reached */
+	return "none"; /* never reached */
 }
 
 ulong board_get_usable_ram_top(ulong total_size)
-- 
2.7.4