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authorJiri Slaby (SUSE) <jirislaby@kernel.org>2024-01-22 14:03:44 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-01-28 05:08:54 +0300
commit8d5cc8eed738e3202379722295c626cba0849785 (patch)
tree9fb0c71b332bef9478f5aa25f25721e5f25c4585 /include/linux/console.h
parenta292e3fc94cb9795bbba4ddac075a9055cd58a5e (diff)
downloadlinux-8d5cc8eed738e3202379722295c626cba0849785.tar.xz
tty: vt: make consw::con_switch() return a bool
The non-zero (true) return value from consw::con_switch() means a redraw is needed. So make this return type a bool explicitly instead of int. The latter might imply that -Eerrors are expected. They are not. And document the hook. Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-parisc@vger.kernel.org Tested-by: Helge Deller <deller@gmx.de> # parisc STI console Link: https://lore.kernel.org/r/20240122110401.7289-31-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/console.h')
-rw-r--r--include/linux/console.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/console.h b/include/linux/console.h
index a6a46b5efd66..f7c6b5fc3a36 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -46,6 +46,8 @@ enum vc_intensity;
* @con_scroll: move lines from @top to @bottom in direction @dir by @lines.
* Return true if no generic handling should be done.
* Invoked by csi_M and printing to the console.
+ * @con_switch: notifier about the console switch; it is supposed to return
+ * true if a redraw is needed.
* @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)
@@ -66,7 +68,7 @@ struct consw {
bool (*con_scroll)(struct vc_data *vc, unsigned int top,
unsigned int bottom, enum con_scroll dir,
unsigned int lines);
- int (*con_switch)(struct vc_data *vc);
+ bool (*con_switch)(struct vc_data *vc);
int (*con_blank)(struct vc_data *vc, int blank, int mode_switch);
int (*con_font_set)(struct vc_data *vc, struct console_font *font,
unsigned int vpitch, unsigned int flags);