[PATCH] fbcon: constify font data

const-ify the font control structures and data, to make somewhat better
guarantees that these are not modified anywhere in the kernel.
Specifically for a kernel debugger to share this information from the
normal kernel code, such a guarantee seems rather desirable.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: "Antonino A. Daplas" <adaplas@hotpop.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 8 deletions

diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index a7b4a52f41f9..0fc8bb499c3f 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -767,7 +767,7 @@ static const char *fbcon_startup(void)
         const char *display_desc = "frame buffer device";
         struct display *p = &fb_display[fg_console];
         struct vc_data *vc = vc_cons[fg_console].d;
-        struct font_desc *font = NULL;
+        const struct font_desc *font = NULL;
         struct module *owner;
         struct fb_info *info = NULL;
         struct fbcon_ops *ops;
@@ -841,7 +841,7 @@ static const char *fbcon_startup(void)
                                                 info->var.yres);
                 vc->vc_font.width = font->width;
                 vc->vc_font.height = font->height;
-                vc->vc_font.data = p->fontdata = font->data;
+                vc->vc_font.data = (void *)(p->fontdata = font->data);
                 vc->vc_font.charcount = 256; /* FIXME  Need to support more fonts */
         }
 
@@ -941,7 +941,7 @@ static void fbcon_init(struct vc_data *vc, int init)
            fb, copy the font from that console */
         t = &fb_display[svc->vc_num];
         if (!vc->vc_font.data) {
-                vc->vc_font.data = p->fontdata = t->fontdata;
+                vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
                 vc->vc_font.width = (*default_mode)->vc_font.width;
                 vc->vc_font.height = (*default_mode)->vc_font.height;
                 p->userfont = t->userfont;
@@ -1188,7 +1188,7 @@ static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
                 return;
         t = &fb_display[svc->vc_num];
         if (!vc->vc_font.data) {
-                vc->vc_font.data = p->fontdata = t->fontdata;
+                vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
                 vc->vc_font.width = (*default_mode)->vc_font.width;
                 vc->vc_font.height = (*default_mode)->vc_font.height;
                 p->userfont = t->userfont;
@@ -2150,7 +2150,7 @@ static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
 }
 
 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
-                             u8 * data, int userfont)
+                             const u8 * data, int userfont)
 {
         struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
         struct display *p = &fb_display[vc->vc_num];
@@ -2168,7 +2168,7 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
                 cnt = FNTCHARCNT(data);
         else
                 cnt = 256;
-        vc->vc_font.data = p->fontdata = data;
+        vc->vc_font.data = (void *)(p->fontdata = data);
         if ((p->userfont = userfont))
                 REFCOUNT(data)++;
         vc->vc_font.width = w;
@@ -2325,7 +2325,7 @@ static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigne
                     tmp->vc_font.width == w &&
                     !memcmp(fb_display[i].fontdata, new_data, size)) {
                         kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
-                        new_data = fb_display[i].fontdata;
+                        new_data = (u8 *)fb_display[i].fontdata;
                         break;
                 }
         }
@@ -2335,7 +2335,7 @@ static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigne
 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
 {
         struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
-        struct font_desc *f;
+        const struct font_desc *f;
 
         if (!name)
                 f = get_default_font(info->var.xres, info->var.yres);