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authorJiri Slaby <jslaby@suse.cz>2016-06-23 13:34:26 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-06-25 09:04:48 -0700
commit97293de977365fe672daec2523e66ef457104921 (patch)
tree14c8bbf5c4c87a1b06afa1f4c800a15b4c92b135 /include/linux/console.h
parent3cc5be7739295ce00f5658c6f45c5c453412f708 (diff)
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 'include/linux/console.h')
-rw-r--r--include/linux/console.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/console.h b/include/linux/console.h
index 98c8615dc300..d175de8d7006 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -28,6 +28,12 @@ struct tty_struct;
#define VT100ID "\033[?1;2c"
#define VT102ID "\033[?6c"
+/**
+ * struct consw - callbacks for consoles
+ *
+ * @con_scrolldelta: the contents of the console should be scrolled by @lines.
+ * Invoked by user. (optional)
+ */
struct consw {
struct module *owner;
const char *(*con_startup)(void);
@@ -48,7 +54,7 @@ struct consw {
int (*con_resize)(struct vc_data *, unsigned int, unsigned int,
unsigned int);
int (*con_set_palette)(struct vc_data *, const unsigned char *);
- int (*con_scrolldelta)(struct vc_data *, int);
+ void (*con_scrolldelta)(struct vc_data *, int lines);
int (*con_set_origin)(struct vc_data *);
void (*con_save_screen)(struct vc_data *);
u8 (*con_build_attr)(struct vc_data *, u8, u8, u8, u8, u8, u8);