mdacon: make mda_vram_base u16 *

Given every user of mda_vram_base expects a pointer, let
mda_vram_base be a pointer to u16.

The offset calculation in mda_detect had to be adjusted by / 2 (due to
different pointer arithmetic now).

We introduce a cast to a value returned from VGA_MAP_MEM. But I will
change VGA_MAP_MEM to return a pointer later too. But vgacon needs a
similar change first.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

diff --git a/drivers/video/console/mdacon.c b/drivers/video/console/mdacon.c
index 424af6b..3ec2b17 100644 (file)
--- a/drivers/video/console/mdacon.c
+++ b/drivers/video/console/mdacon.c
@@ -48,7 +48,7 @@ static DEFINE_SPINLOCK(mda_lock);
 
 /* description of the hardware layout */
 
-static unsigned long   mda_vram_base;          /* Base of video memory */
+static u16             *mda_vram_base;         /* Base of video memory */
 static unsigned long   mda_vram_len;           /* Size of video memory */
 static unsigned int    mda_num_columns;        /* Number of text columns */
 static unsigned int    mda_num_lines;          /* Number of text lines */
@@ -205,8 +205,8 @@ static int mda_detect(void)
 
        /* do a memory check */
 
-       p = (u16 *) mda_vram_base;
-       q = (u16 *) (mda_vram_base + 0x01000);
+       p = mda_vram_base;
+       q = mda_vram_base + 0x01000 / 2;
 
        p_save = scr_readw(p);
        q_save = scr_readw(q);
@@ -323,7 +323,7 @@ static const char *mdacon_startup(void)
        mda_num_lines   = 25;
 
        mda_vram_len  = 0x01000;
-       mda_vram_base = VGA_MAP_MEM(0xb0000, mda_vram_len);
+       mda_vram_base = (u16 *)VGA_MAP_MEM(0xb0000, mda_vram_len);
 
        mda_index_port  = 0x3b4;
        mda_value_port  = 0x3b5;
@@ -420,7 +420,7 @@ static void mdacon_invert_region(struct vc_data *c, u16 *p, int count)
        }
 }
 
-#define MDA_ADDR(x,y)  ((u16 *) mda_vram_base + (y)*mda_num_columns + (x))
+#define MDA_ADDR(x, y)  (mda_vram_base + (y)*mda_num_columns + (x))
 
 static void mdacon_putc(struct vc_data *c, int ch, int y, int x)
 {
@@ -463,7 +463,7 @@ static int mdacon_blank(struct vc_data *c, int blank, int mode_switch)
 {
        if (mda_type == TYPE_MDA) {
                if (blank) 
-                       scr_memsetw((void *)mda_vram_base, 
+                       scr_memsetw(mda_vram_base,
                                mda_convert_attr(c->vc_video_erase_char),
                                c->vc_screenbuf_size);
                /* Tell console.c that it has to restore the screen itself */