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tty: vt: change consw::con_set_origin() return type

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The return value of consw::con_set_origin() is only true/false, meaining
if vc->vc_origin is set to vc->vc_screenbuf or not.

So switch the type and returned values accordingly.

And document the hook.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Tested-by: Helge Deller <deller@gmx.de> # parisc STI console
Link: https://lore.kernel.org/r/20240122110401.7289-39-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby (SUSE) 2024-01-22 12:03:52 +01:00 committed by Greg Kroah-Hartman
parent 4f59617065
commit 42822fabfc
2 changed files with 8 additions and 5 deletions
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8
drivers/video/console/vgacon.c
View File

@ -65,7 +65,7 @@ static struct vgastate vgastate;
* Interface used by the world
*/
static int vgacon_set_origin(struct vc_data *c);
static bool vgacon_set_origin(struct vc_data *c);
static struct uni_pagedict *vgacon_uni_pagedir;
static int vgacon_refcount;
@ -1100,15 +1100,15 @@ static int vgacon_resize(struct vc_data *c, unsigned int width,
return 0;
}
static int vgacon_set_origin(struct vc_data *c)
static bool vgacon_set_origin(struct vc_data *c)
{
if (vga_is_gfx || /* We don't play origin tricks in graphic modes */
(console_blanked && !vga_palette_blanked)) /* Nor we write to blanked screens */
return 0;
return false;
c->vc_origin = c->vc_visible_origin = vga_vram_base;
vga_set_mem_top(c);
vga_rolled_over = 0;
return 1;
return true;
}
static void vgacon_save_screen(struct vc_data *c)

5
include/linux/console.h
View File

@ -55,6 +55,9 @@ enum vc_intensity;
* @con_set_palette: sets the palette of the console to @table (optional)
* @con_scrolldelta: the contents of the console should be scrolled by @lines.
* Invoked by user. (optional)
* @con_set_origin: set origin (see &vc_data::vc_origin) of the @vc. If not
* provided or returns false, the origin is set to
* @vc->vc_screenbuf. (optional)
*/
struct consw {
struct module *owner;
@ -87,7 +90,7 @@ struct consw {
void (*con_set_palette)(struct vc_data *vc,
const unsigned char *table);
void (*con_scrolldelta)(struct vc_data *vc, int lines);
int (*con_set_origin)(struct vc_data *vc);
bool (*con_set_origin)(struct vc_data *vc);
void (*con_save_screen)(struct vc_data *vc);
u8 (*con_build_attr)(struct vc_data *vc, u8 color,
enum vc_intensity intensity,