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-rw-r--r--linux-cjktty-patch-for-5.4.66+.patch193
1 files changed, 193 insertions, 0 deletions
diff --git a/linux-cjktty-patch-for-5.4.66+.patch b/linux-cjktty-patch-for-5.4.66+.patch
new file mode 100644
index 00000000000..dbceeeae02c
--- /dev/null
+++ b/linux-cjktty-patch-for-5.4.66+.patch
@@ -0,0 +1,193 @@
+--- linux-cjktty-5.4.65.patch 2020-09-18 00:19:07.610052000 +0800
++++ linux-cjktty-5.4.66.patch 2020-09-18 19:03:23.870884705 +0800
+@@ -284,7 +284,7 @@
+ #include <linux/module.h>
+ #include <linux/slab.h>
+ #include <linux/string.h>
+-@@ -43,6 +44,21 @@ static void update_attr(u8 *dst, u8 *src, int attribute,
++@@ -43,6 +44,19 @@ static void update_attr(u8 *dst, u8 *src, int attribute,
+ }
+ }
+
+@@ -293,8 +293,6 @@
+ + unsigned long p = (long)utf8;
+ + if (p >= vc->vc_origin && p < vc->vc_scr_end) {
+ + return scr_readw((unsigned short *)(p + vc->vc_screenbuf_size));
+-+ } else if (vc->vc_num == fg_console && fbcon_is_softback(utf8)){
+-+ return scr_readw((unsigned short *)(p + fbcon_softback_size));
+ + } else {
+ + u16 extra_c;
+ + int c = *(int*)utf8;
+@@ -381,7 +379,7 @@
+ +
+ cursor.set = 0;
+
+- if (softback_lines) {
++ c = scr_readw((u16 *) vc->vc_pos);
+ @@ -258,7 +299,7 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+
+ c = scr_readw((u16 *) vc->vc_pos);
+@@ -395,43 +393,7 @@
+ index c9235a2f42f89..7ed69f292db9b 100644
+ --- a/drivers/video/fbdev/core/fbcon.c
+ +++ b/drivers/video/fbdev/core/fbcon.c
+-@@ -123,7 +123,8 @@ static int logo_lines;
+- enums. */
+- static int logo_shown = FBCON_LOGO_CANSHOW;
+- /* Software scrollback */
+--static int fbcon_softback_size = 32768;
+-+/*I need to use it out side fbcon.c */
+-+int fbcon_softback_size = 32768;
+- static unsigned long softback_buf, softback_curr;
+- static unsigned long softback_in;
+- static unsigned long softback_top, softback_end;
+-@@ -216,6 +217,14 @@ static void fbcon_start(void);
+- static void fbcon_exit(void);
+- static struct device *fbcon_device;
+-
+-+int fbcon_is_softback(const unsigned short *str)
+-+{
+-+ unsigned long p = (long)str;
+-+ if(p >= softback_buf && p <softback_end)
+-+ return 1;
+-+ return 0;
+-+}
+-+
+- #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
+- static inline void fbcon_set_rotation(struct fb_info *info)
+- {
+-@@ -1019,10 +1028,7 @@ static const char *fbcon_startup(void)
+- if (info->fix.type != FB_TYPE_TEXT) {
+- if (fbcon_softback_size) {
+- if (!softback_buf) {
+-- softback_buf =
+-- (unsigned long)
+-- kvmalloc(fbcon_softback_size,
+-- GFP_KERNEL);
+-+ softback_buf = (unsigned long) kmalloc(fbcon_softback_size * 2, GFP_KERNEL);
+- if (!softback_buf) {
+- fbcon_softback_size = 0;
+- softback_top = 0;
++
+ @@ -1051,7 +1057,8 @@ static const char *fbcon_startup(void)
+ vc->vc_font.width = font->width;
+ vc->vc_font.height = font->height;
+@@ -481,31 +443,6 @@
+ p->userfont = t->userfont;
+ if (p->userfont)
+ REFCOUNT(p->fontdata)++;
+-@@ -1612,6 +1618,7 @@ static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
+- static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p,
+- long delta)
+- {
+-+ u16 charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
+- int count = vc->vc_rows;
+- unsigned short *d, *s;
+- unsigned long n;
+-@@ -1674,6 +1681,8 @@ static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p,
+- start = s;
+- }
+- }
+-+ if( ((scr_readw(s) & charmask) == 0xff || (scr_readw(s) & charmask) == 0xfe) && scr_readw(s + (vc->vc_screenbuf_size >> 1)) != 0){
+-+ }else{
+- if (c == scr_readw(d)) {
+- if (s > start) {
+- fbcon_putcs(vc, start, s - start,
+-@@ -1685,6 +1694,7 @@ static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p,
+- start++;
+- }
+- }
+-+ }
+- s++;
+- d++;
+- } while (s < le);
+ @@ -1767,6 +1777,7 @@ static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
+ }
+
+@@ -554,14 +491,6 @@
+ console_conditional_schedule();
+ s++;
+ d++;
+-@@ -1852,6 +1868,7 @@ static inline void fbcon_softback_note(struct vc_data *vc, int t,
+-
+- while (count) {
+- scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
+-+ scr_memcpyw((u16 *) softback_in + (fbcon_softback_size >> 1), p + (vc->vc_screenbuf_size >> 1), vc->vc_size_row);
+- count--;
+- p = advance_row(p, 1);
+- softback_in += vc->vc_size_row;
+ @@ -2455,7 +2472,6 @@ static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
+
+ font->width = vc->vc_font.width;
+@@ -570,40 +499,22 @@
+ if (!font->data)
+ return 0;
+
+-@@ -2760,6 +2776,19 @@ static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
+- unsigned long p;
+- int line;
+-
++@@ -2593,6 +2593,10 @@ static void fbcon_set_palette(struct vc_
++
++ static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
++ {
+ + if (offset < 0) {
+ + offset = -offset - 1;
+-+ if (vc->vc_num != fg_console || !softback_lines)
+-+ return (u16 *)(vc->vc_origin + offset + (vc->vc_screenbuf_size));
+-+ line = offset / vc->vc_size_row;
+-+ if (line >= softback_lines)
+-+ return (u16 *) (vc->vc_origin + offset - softback_lines * vc->vc_size_row + (vc->vc_screenbuf_size));
+-+ p = softback_curr + offset;
+-+ if (p >= softback_end)
+-+ p += softback_buf - softback_end;
+-+ return (u16 *) (p + (fbcon_softback_size));
+-+ }
+-+
+- if (vc->vc_num != fg_console || !softback_lines)
+- return (u16 *) (vc->vc_origin + offset);
+- line = offset / vc->vc_size_row;
+-@@ -2867,6 +2896,8 @@ static void fbcon_scrolldelta(struct vc_data *vc, int lines)
+- q -= vc->vc_size_row;
+- scr_memcpyw((u16 *) q, (u16 *) p,
+- vc->vc_size_row);
+-+ scr_memcpyw((u16 *) (q + (vc->vc_screenbuf_size >> 1)), (u16 *) (p + (fbcon_softback_size >> 1)),
+-+ vc->vc_size_row);
+- }
+- softback_in = softback_curr = p;
+- update_region(vc, vc->vc_origin,
+++ return (u16 *)(vc->vc_origin + offset + (vc->vc_screenbuf_size));
+++ }
++ return (u16 *) (vc->vc_origin + offset);
++ }
++
+ diff --git a/drivers/video/fbdev/core/fbcon.h b/drivers/video/fbdev/core/fbcon.h
+ index 20dea853765f5..b34c419dd1eb2 100644
+ --- a/drivers/video/fbdev/core/fbcon.h
+ +++ b/drivers/video/fbdev/core/fbcon.h
+-@@ -262,4 +262,13 @@ extern void fbcon_set_rotate(struct fbcon_ops *ops);
++@@ -262,4 +262,10 @@ extern void fbcon_set_rotate(struct fbcon_ops *ops);
+ #define fbcon_set_rotate(x) do {} while(0)
+ #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
+
+@@ -613,9 +524,6 @@
+ +#define fbcon_platform_get_rotate(i) FB_ROTATE_UR
+ +#endif /* CONFIG_DMI */
+ +
+-+extern int fbcon_softback_size;
+-+extern int fbcon_is_softback(const unsigned short *str);
+-+
+ #endif /* _VIDEO_FBCON_H */
+ diff --git a/drivers/video/fbdev/core/fbcon_ccw.c b/drivers/video/fbdev/core/fbcon_ccw.c
+ index dfa9a8aa4509c..beb33f5795061 100644
+@@ -665,8 +573,8 @@
+ if (!ops->fontbuffer)
+ return;
+ @@ -245,9 +258,19 @@ static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+- y += softback_lines;
+- }
++
++ cursor.set = 0;
+
+ - c = scr_readw((u16 *) vc->vc_pos);
+ + c = scr_readw((u16 *) vc->vc_pos);