[PATCH v2 1/3] video: sunxi: Change sunxi_get_mon_desc() to not return NULL for the default case

[Bin Meng]

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...@gmail.com>

---

Changes in v2:
- catch sunxi_monitor_none in the default case and use "none" there

 drivers/video/sunxi/sunxi_display.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/sunxi/sunxi_display.c 
b/drivers/video/sunxi/sunxi_display.c
index 31f0aa7..4e1720e 100644
--- a/drivers/video/sunxi/sunxi_display.c
+++ b/drivers/video/sunxi/sunxi_display.c
@@ -1014,7 +1014,6 @@ static void sunxi_mode_set(const struct ctfb_res_modes 
*mode,
 static const char *sunxi_get_mon_desc(enum sunxi_monitor monitor)
 {
        switch (monitor) {
-       case sunxi_monitor_none:                return "none";
        case sunxi_monitor_dvi:                 return "dvi";
        case sunxi_monitor_hdmi:                return "hdmi";
        case sunxi_monitor_lcd:                 return "lcd";
@@ -1023,8 +1022,9 @@ static const char *sunxi_get_mon_desc(enum sunxi_monitor 
monitor)
        case sunxi_monitor_composite_ntsc:      return "composite-ntsc";
        case sunxi_monitor_composite_pal_m:     return "composite-pal-m";
        case sunxi_monitor_composite_pal_nc:    return "composite-pal-nc";
+       case sunxi_monitor_none:                /* fall through */
+       default:                                return "none";
        }
-       return NULL; /* never reached */
 }
 
 ulong board_get_usable_ram_top(ulong total_size)
-- 
2.7.4