tty: vt, drop VT_BUF_VRAM_ONLY

It is never defined. And I spent quite some time looking into the
history and cannot find how this was ever used. Given it was not used
in the history, I doubt it currently works as expected after the years
of changes all over the code.

So kill it.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index d5d9060..600c3bb 100644 (file)
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -278,12 +278,7 @@ static void notify_update(struct vc_data *vc)
  */
 
 #define IS_FG(vc)      ((vc)->vc_num == fg_console)
-
-#ifdef VT_BUF_VRAM_ONLY
-#define DO_UPDATE(vc)  0
-#else
 #define DO_UPDATE(vc)  (CON_IS_VISIBLE(vc) && !console_blanked)
-#endif
 
 static inline unsigned short *screenpos(struct vc_data *vc, int offset, int viewed)
 {
@@ -349,7 +344,6 @@ static void scrdown(struct vc_data *vc, unsigned int t, unsigned int b, int nr)
 
 static void do_update_region(struct vc_data *vc, unsigned long start, int count)
 {
-#ifndef VT_BUF_VRAM_ONLY
        unsigned int xx, yy, offset;
        u16 *p;
 
@@ -390,7 +384,6 @@ static void do_update_region(struct vc_data *vc, unsigned long start, int count)
                        start = vc->vc_sw->con_getxy(vc, start, NULL, NULL);
                }
        }
-#endif
 }
 
 void update_region(struct vc_data *vc, unsigned long start, int count)
@@ -413,7 +406,6 @@ static u8 build_attr(struct vc_data *vc, u8 _color, u8 _intensity, u8 _blink,
                return vc->vc_sw->con_build_attr(vc, _color, _intensity,
                       _blink, _underline, _reverse, _italic);
 
-#ifndef VT_BUF_VRAM_ONLY
 /*
  * ++roman: I completely changed the attribute format for monochrome
  * mode (!can_do_color). The formerly used MDA (monochrome display
@@ -448,9 +440,6 @@ static u8 build_attr(struct vc_data *vc, u8 _color, u8 _intensity, u8 _blink,
                a <<= 1;
        return a;
        }
-#else
-       return 0;
-#endif
 }
 
 static void update_attr(struct vc_data *vc)
@@ -470,10 +459,9 @@ void invert_screen(struct vc_data *vc, int offset, int count, int viewed)
 
        count /= 2;
        p = screenpos(vc, offset, viewed);
-       if (vc->vc_sw->con_invert_region)
+       if (vc->vc_sw->con_invert_region) {
                vc->vc_sw->con_invert_region(vc, p, count);
-#ifndef VT_BUF_VRAM_ONLY
-       else {
+       } else {
                u16 *q = p;
                int cnt = count;
                u16 a;
@@ -501,7 +489,7 @@ void invert_screen(struct vc_data *vc, int offset, int count, int viewed)
                        }
                }
        }
-#endif
+
        if (DO_UPDATE(vc))
                do_update_region(vc, (unsigned long) p, count);
        notify_update(vc);
@@ -2178,14 +2166,10 @@ static int is_double_width(uint32_t ucs)
 /* acquires console_lock */
 static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int count)
 {
-#ifdef VT_BUF_VRAM_ONLY
-#define FLUSH do { } while(0);
-#else
 #define FLUSH if (draw_x >= 0) { \
        vc->vc_sw->con_putcs(vc, (u16 *)draw_from, (u16 *)draw_to - (u16 *)draw_from, vc->vc_y, draw_x); \
        draw_x = -1; \
        }
-#endif
 
        int c, tc, ok, n = 0, draw_x = -1;
        unsigned int currcons;