[PATCH RFC 2/3] fonts: Use BUILD_BUG_ON() for checking empty font table

From: Takashi Iwai
Date: Tue Jun 18 2019 - 16:39:45 EST


We have a nice macro, and the check of emptiness of the font table can
be done in a simpler way.

Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
lib/fonts/fonts.c | 15 +--------------
1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/lib/fonts/fonts.c b/lib/fonts/fonts.c
index 269a829fcbb7..a8e31e9d6fc5 100644
--- a/lib/fonts/fonts.c
+++ b/lib/fonts/fonts.c
@@ -20,55 +20,41 @@
#endif
#include <linux/font.h>

-#define NO_FONTS
-
static const struct font_desc *fonts[] = {
#ifdef CONFIG_FONT_8x8
-#undef NO_FONTS
&font_vga_8x8,
#endif
#ifdef CONFIG_FONT_8x16
-#undef NO_FONTS
&font_vga_8x16,
#endif
#ifdef CONFIG_FONT_6x11
-#undef NO_FONTS
&font_vga_6x11,
#endif
#ifdef CONFIG_FONT_7x14
-#undef NO_FONTS
&font_7x14,
#endif
#ifdef CONFIG_FONT_SUN8x16
-#undef NO_FONTS
&font_sun_8x16,
#endif
#ifdef CONFIG_FONT_SUN12x22
-#undef NO_FONTS
&font_sun_12x22,
#endif
#ifdef CONFIG_FONT_10x18
-#undef NO_FONTS
&font_10x18,
#endif
#ifdef CONFIG_FONT_ACORN_8x8
-#undef NO_FONTS
&font_acorn_8x8,
#endif
#ifdef CONFIG_FONT_PEARL_8x8
-#undef NO_FONTS
&font_pearl_8x8,
#endif
#ifdef CONFIG_FONT_MINI_4x6
-#undef NO_FONTS
&font_mini_4x6,
#endif
#ifdef CONFIG_FONT_6x10
-#undef NO_FONTS
&font_6x10,
#endif
#ifdef CONFIG_FONT_TER16x32
-#undef NO_FONTS
&font_ter_16x32,
#endif
};
@@ -94,6 +80,7 @@ const struct font_desc *find_font(const char *name)
{
unsigned int i;

+ BUILD_BUG_ON(!num_fonts);
for (i = 0; i < num_fonts; i++)
if (!strcmp(fonts[i]->name, name))
return fonts[i];
--
2.16.4