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path: root/drivers/video/console/vgacon.c
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Diffstat (limited to 'drivers/video/console/vgacon.c')
-rw-r--r--drivers/video/console/vgacon.c28
1 files changed, 22 insertions, 6 deletions
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index e64d42e2449e..f32b590730f2 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -114,6 +114,7 @@ static int vga_512_chars;
114static int vga_video_font_height; 114static int vga_video_font_height;
115static int vga_scan_lines; 115static int vga_scan_lines;
116static unsigned int vga_rolled_over = 0; 116static unsigned int vga_rolled_over = 0;
117static int vga_init_done;
117 118
118static int __init no_scroll(char *str) 119static int __init no_scroll(char *str)
119{ 120{
@@ -190,7 +191,7 @@ static void vgacon_scrollback_init(int pitch)
190 } 191 }
191} 192}
192 193
193static void __init vgacon_scrollback_startup(void) 194static void vgacon_scrollback_startup(void)
194{ 195{
195 vgacon_scrollback = alloc_bootmem(CONFIG_VGACON_SOFT_SCROLLBACK_SIZE 196 vgacon_scrollback = alloc_bootmem(CONFIG_VGACON_SOFT_SCROLLBACK_SIZE
196 * 1024); 197 * 1024);
@@ -355,7 +356,7 @@ static int vgacon_scrolldelta(struct vc_data *c, int lines)
355} 356}
356#endif /* CONFIG_VGACON_SOFT_SCROLLBACK */ 357#endif /* CONFIG_VGACON_SOFT_SCROLLBACK */
357 358
358static const char __init *vgacon_startup(void) 359static const char *vgacon_startup(void)
359{ 360{
360 const char *display_desc = NULL; 361 const char *display_desc = NULL;
361 u16 saved1, saved2; 362 u16 saved1, saved2;
@@ -523,7 +524,12 @@ static const char __init *vgacon_startup(void)
523 524
524 vgacon_xres = ORIG_VIDEO_COLS * VGA_FONTWIDTH; 525 vgacon_xres = ORIG_VIDEO_COLS * VGA_FONTWIDTH;
525 vgacon_yres = vga_scan_lines; 526 vgacon_yres = vga_scan_lines;
526 vgacon_scrollback_startup(); 527
528 if (!vga_init_done) {
529 vgacon_scrollback_startup();
530 vga_init_done = 1;
531 }
532
527 return display_desc; 533 return display_desc;
528} 534}
529 535
@@ -531,10 +537,20 @@ static void vgacon_init(struct vc_data *c, int init)
531{ 537{
532 unsigned long p; 538 unsigned long p;
533 539
534 /* We cannot be loaded as a module, therefore init is always 1 */ 540 /*
541 * We cannot be loaded as a module, therefore init is always 1,
542 * but vgacon_init can be called more than once, and init will
543 * not be 1.
544 */
535 c->vc_can_do_color = vga_can_do_color; 545 c->vc_can_do_color = vga_can_do_color;
536 c->vc_cols = vga_video_num_columns; 546
537 c->vc_rows = vga_video_num_lines; 547 /* set dimensions manually if init != 0 since vc_resize() will fail */
548 if (init) {
549 c->vc_cols = vga_video_num_columns;
550 c->vc_rows = vga_video_num_lines;
551 } else
552 vc_resize(c, vga_video_num_columns, vga_video_num_lines);
553
538 c->vc_scan_lines = vga_scan_lines; 554 c->vc_scan_lines = vga_scan_lines;
539 c->vc_font.height = vga_video_font_height; 555 c->vc_font.height = vga_video_font_height;
540 c->vc_complement_mask = 0x7700; 556 c->vc_complement_mask = 0x7700;