vcs: invoke the vt update callback when /dev/vcs* is written to
A notifier chain is called whenever the vt code modifies a terminal
content, except for one case which is when the modification comes
through writes to /dev/vcs* devices. Let's add the missing notifier
invocation at the end of vcs_write() for that case too.
Signed-off-by: Nicolas Pitre <nicolas.pitre@canonical.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/char/vc_screen.c b/drivers/char/vc_screen.c
index 6f7054e..273ab44 100644
--- a/drivers/char/vc_screen.c
+++ b/drivers/char/vc_screen.c
@@ -538,6 +538,8 @@
}
*ppos += written;
ret = written;
+ if (written)
+ vcs_scr_updated(vc);
unlock_out:
release_console_sem();
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 281aada..a8ec48e 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -4182,6 +4182,11 @@
}
}
+void vcs_scr_updated(struct vc_data *vc)
+{
+ notify_update(vc);
+}
+
/*
* Visible symbols for modules
*/
diff --git a/include/linux/selection.h b/include/linux/selection.h
index 8cdaa11..85193aa 100644
--- a/include/linux/selection.h
+++ b/include/linux/selection.h
@@ -39,5 +39,6 @@
extern u16 vcs_scr_readw(struct vc_data *vc, const u16 *org);
extern void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org);
+extern void vcs_scr_updated(struct vc_data *vc);
#endif
