[PATCH 1/6] fbdev: fbmon: fix -Wextra build warnings

[Randy Dunlap]

When 'DEBUG' is not defined, modify the DPRINTK() macro to use the
no_printk() macro instead of using <empty>.
This fixes a build warning when -Wextra is used and provides
printk format checking:

../drivers/video/fbdev/core/fbmon.c:812:47: warning: suggest braces around empty body in an âifâ statement [-Wempty-body]
../drivers/video/fbdev/core/fbmon.c:842:24: warning: suggest braces around empty body in an âelseâ statement [-Wempty-body]
../drivers/video/fbdev/core/fbmon.c:847:24: warning: suggest braces around empty body in an âelseâ statement [-Wempty-body]

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-fbdev@xxxxxxxxxxxxxxx
---
Alternative: use pr_debug() so that CONFIG_DYNAMIC_DEBUG can be used
at these sites.

 drivers/video/fbdev/core/fbmon.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20200313.orig/drivers/video/fbdev/core/fbmon.c
+++ linux-next-20200313/drivers/video/fbdev/core/fbmon.c
@@ -44,7 +44,7 @@
 #ifdef DEBUG
 #define DPRINTK(fmt, args...) printk(fmt,## args)
 #else
-#define DPRINTK(fmt, args...)
+#define DPRINTK(fmt, args...) no_printk(fmt, ##args)
 #endif
 
 #define FBMON_FIX_HEADER  1