tty: vt, consw->con_set_palette cleanup
* allow NULL consw->con_set_palette (some consoles define an empty
hook)
* => remove empty hooks now
* return value of consw->con_set_palette is never checked => make the
function void
* document consw->con_set_palette a bit
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: linux-usb@vger.kernel.org
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 365a91d..d5d9060 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -3978,7 +3978,7 @@
{
WARN_CONSOLE_UNLOCKED();
- if (vc->vc_mode != KD_GRAPHICS)
+ if (vc->vc_mode != KD_GRAPHICS && vc->vc_sw->con_set_palette)
vc->vc_sw->con_set_palette(vc, color_table);
}
diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c
index a8244eb..4112835 100644
--- a/drivers/usb/misc/sisusbvga/sisusb_con.c
+++ b/drivers/usb/misc/sisusbvga/sisusb_con.c
@@ -595,7 +595,7 @@
}
/* interface routine */
-static int
+static void
sisusbcon_set_palette(struct vc_data *c, const unsigned char *table)
{
struct sisusb_usb_data *sisusb;
@@ -604,17 +604,17 @@
/* Return value not used by vt */
if (!CON_IS_VISIBLE(c))
- return -EINVAL;
+ return;
sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
if (!sisusb)
- return -EINVAL;
+ return;
/* sisusb->lock is down */
if (sisusb_is_inactive(c, sisusb)) {
mutex_unlock(&sisusb->lock);
- return -EINVAL;
+ return;
}
for (i = j = 0; i < 16; i++) {
@@ -629,8 +629,6 @@
}
mutex_unlock(&sisusb->lock);
-
- return 0;
}
/* interface routine */
@@ -1428,7 +1426,6 @@
.con_font_get = SISUSBCONDUMMY,
.con_font_default = SISUSBCONDUMMY,
.con_font_copy = SISUSBCONDUMMY,
- .con_set_palette = SISUSBCONDUMMY,
};
int
diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
index 9ce03b9..0ef544e 100644
--- a/drivers/video/console/dummycon.c
+++ b/drivers/video/console/dummycon.c
@@ -71,6 +71,5 @@
.con_font_get = DUMMY,
.con_font_default = DUMMY,
.con_font_copy = DUMMY,
- .con_set_palette = DUMMY,
};
EXPORT_SYMBOL_GPL(dummy_con);
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index eadc7bf..9359b06 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -170,7 +170,7 @@
int height, int width);
static int fbcon_switch(struct vc_data *vc);
static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
-static int fbcon_set_palette(struct vc_data *vc, const unsigned char *table);
+static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table);
/*
* Internal routines
@@ -2651,17 +2651,17 @@
0, 16, palette_red, palette_green, palette_blue, NULL
};
-static int fbcon_set_palette(struct vc_data *vc, const unsigned char *table)
+static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
int i, j, k, depth;
u8 val;
if (fbcon_is_inactive(vc, info))
- return -EINVAL;
+ return;
if (!CON_IS_VISIBLE(vc))
- return 0;
+ return;
depth = fb_get_color_depth(&info->var, &info->fix);
if (depth > 3) {
@@ -2683,7 +2683,7 @@
} else
fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
- return fb_set_cmap(&palette_cmap, info);
+ fb_set_cmap(&palette_cmap, info);
}
static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
diff --git a/drivers/video/console/mdacon.c b/drivers/video/console/mdacon.c
index 234af26b..1fe5245 100644
--- a/drivers/video/console/mdacon.c
+++ b/drivers/video/console/mdacon.c
@@ -481,11 +481,6 @@
return 1; /* redrawing needed */
}
-static int mdacon_set_palette(struct vc_data *c, const unsigned char *table)
-{
- return -EINVAL;
-}
-
static int mdacon_blank(struct vc_data *c, int blank, int mode_switch)
{
if (mda_type == TYPE_MDA) {
@@ -572,7 +567,6 @@
.con_bmove = mdacon_bmove,
.con_switch = mdacon_switch,
.con_blank = mdacon_blank,
- .con_set_palette = mdacon_set_palette,
.con_build_attr = mdacon_build_attr,
.con_invert_region = mdacon_invert_region,
};
diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c
index eb3d4ce..a436930 100644
--- a/drivers/video/console/newport_con.c
+++ b/drivers/video/console/newport_con.c
@@ -574,11 +574,6 @@
return newport_set_font(vc->vc_num, font);
}
-static int newport_set_palette(struct vc_data *vc, const unsigned char *table)
-{
- return -EINVAL;
-}
-
static int newport_scroll(struct vc_data *vc, int t, int b, int dir,
int lines)
{
@@ -728,7 +723,6 @@
.con_blank = newport_blank,
.con_font_set = newport_font_set,
.con_font_default = newport_font_default,
- .con_set_palette = newport_set_palette,
.con_set_origin = DUMMY,
.con_save_screen = DUMMY
};
diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c
index 20f6a2f..fe7c4db 100644
--- a/drivers/video/console/sticon.c
+++ b/drivers/video/console/sticon.c
@@ -79,11 +79,6 @@
return "STI console";
}
-static int sticon_set_palette(struct vc_data *c, const unsigned char *table)
-{
- return -EINVAL;
-}
-
static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
{
int redraw_cursor = 0;
@@ -353,7 +348,6 @@
.con_bmove = sticon_bmove,
.con_switch = sticon_switch,
.con_blank = sticon_blank,
- .con_set_palette = sticon_set_palette,
.con_set_origin = sticon_set_origin,
.con_save_screen = sticon_save_screen,
.con_build_attr = sticon_build_attr,
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index f447d69..aaae9bd 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -856,16 +856,13 @@
}
}
-static int vgacon_set_palette(struct vc_data *vc, const unsigned char *table)
+static void vgacon_set_palette(struct vc_data *vc, const unsigned char *table)
{
#ifdef CAN_LOAD_PALETTE
if (vga_video_type != VIDEO_TYPE_VGAC || vga_palette_blanked
|| !CON_IS_VISIBLE(vc))
- return -EINVAL;
+ return;
vga_set_palette(vc, table);
- return 0;
-#else
- return -EINVAL;
#endif
}
diff --git a/include/linux/console.h b/include/linux/console.h
index d175de8..382a527 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -31,6 +31,7 @@
/**
* struct consw - callbacks for consoles
*
+ * @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)
*/
@@ -53,7 +54,8 @@
int (*con_font_copy)(struct vc_data *, int);
int (*con_resize)(struct vc_data *, unsigned int, unsigned int,
unsigned int);
- int (*con_set_palette)(struct vc_data *, const unsigned char *);
+ void (*con_set_palette)(struct vc_data *,
+ const unsigned char *table);
void (*con_scrolldelta)(struct vc_data *, int lines);
int (*con_set_origin)(struct vc_data *);
void (*con_save_screen)(struct vc_data *);