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| author |   Jiri Slaby <jslaby@suse.cz> | 2016-06-23 13:34:26 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-25 09:04:48 -0700 |
| commit | 97293de977365fe672daec2523e66ef457104921 (patch) | |
| tree | 14c8bbf5c4c87a1b06afa1f4c800a15b4c92b135 /drivers/video/console/vgacon.c | |
| parent | sisusb: remove dummy variables (diff) | |
| download | linux-dev-97293de977365fe672daec2523e66ef457104921.tar.xz linux-dev-97293de977365fe672daec2523e66ef457104921.zip | |
tty: vt, consw->con_scrolldelta cleanup
* allow NULL consw->con_scrolldelta (some consoles define an empty
hook)
* => remove empty hooks now
* return value of consw->con_scrolldelta is never checked => make the
function void
* document consw->con_scrolldelta 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>
Diffstat (limited to 'drivers/video/console/vgacon.c')
| -rw-r--r-- | drivers/video/console/vgacon.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c index 8bf911002cba..f447d6916991 100644 --- a/drivers/video/console/vgacon.c +++ b/drivers/video/console/vgacon.c @@ -80,7 +80,7 @@ static void vgacon_deinit(struct vc_data *c); static void vgacon_cursor(struct vc_data *c, int mode); static int vgacon_switch(struct vc_data *c); static int vgacon_blank(struct vc_data *c, int blank, int mode_switch); -static int vgacon_scrolldelta(struct vc_data *c, int lines); +static void vgacon_scrolldelta(struct vc_data *c, int lines); static int vgacon_set_origin(struct vc_data *c); static void vgacon_save_screen(struct vc_data *c); static int vgacon_scroll(struct vc_data *c, int t, int b, int dir, @@ -248,18 +248,18 @@ static void vgacon_restore_screen(struct vc_data *c) } } -static int vgacon_scrolldelta(struct vc_data *c, int lines) +static void vgacon_scrolldelta(struct vc_data *c, int lines) { int start, end, count, soff; if (!lines) { c->vc_visible_origin = c->vc_origin; vga_set_mem_top(c); - return 1; + return; } if (!vgacon_scrollback) - return 1; + return; if (!vgacon_scrollback_save) { vgacon_cursor(c, CM_ERASE); @@ -320,8 +320,6 @@ static int vgacon_scrolldelta(struct vc_data *c, int lines) scr_memcpyw(d, s, diff * c->vc_size_row); } else vgacon_cursor(c, CM_MOVE); - - return 1; } #else #define vgacon_scrollback_startup(...) do { } while (0) @@ -334,7 +332,7 @@ static void vgacon_restore_screen(struct vc_data *c) vgacon_scrolldelta(c, 0); } -static int vgacon_scrolldelta(struct vc_data *c, int lines) +static void vgacon_scrolldelta(struct vc_data *c, int lines) { if (!lines) /* Turn scrollback off */ c->vc_visible_origin = c->vc_origin; @@ -362,7 +360,6 @@ static int vgacon_scrolldelta(struct vc_data *c, int lines) c->vc_visible_origin = vga_vram_base + (p + ul) % we; } vga_set_mem_top(c); - return 1; } #endif /* CONFIG_VGACON_SOFT_SCROLLBACK */ |