vt: add missing notification when switching back to text mode

npitre · gregkh · commit ff78538e07fa · 2025-06-19T13:27:16.000+02:00
Programs using poll() on /dev/vcsa to be notified when VT changes occur were missing one case: the switch from gfx to text mode. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Link: https://lore.kernel.org/r/9o5ro928-0pp4-05rq-70p4-ro385n21n723@onlyvoer.pbz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
@@ -4650,6 +4650,7 @@ void do_unblank_screen(int leaving_gfx)
 	set_palette(vc);
 	set_cursor(vc);
 	vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num);
+	notify_update(vc);
 }
 EXPORT_SYMBOL(do_unblank_screen);
 

Original file line number	Diff line number	Diff line change
`@@ -4650,6 +4650,7 @@ void do_unblank_screen(int leaving_gfx)`
`4650`	`4650`	`set_palette(vc);`
`4651`	`4651`	`set_cursor(vc);`
`4652`	`4652`	`vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num);`
	`4653`	`+ notify_update(vc);`
`4653`	`4654`	`}`
`4654`	`4655`	`EXPORT_SYMBOL(do_unblank_screen);`
`4655`	`4656`