From 432c9ed22aff641039ccd400cdabf983fabc285e Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Fri, 1 Oct 2010 00:10:44 -0400 Subject: [PATCH] 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 Cc: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/char/vc_screen.c | 2 ++ drivers/char/vt.c | 5 +++++ include/linux/selection.h | 1 + 3 files changed, 8 insertions(+) diff --git a/drivers/char/vc_screen.c b/drivers/char/vc_screen.c index 6f7054e1a51..273ab44cc91 100644 --- a/drivers/char/vc_screen.c +++ b/drivers/char/vc_screen.c @@ -538,6 +538,8 @@ vcs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) } *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 281aada7b4a..a8ec48ed14d 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -4182,6 +4182,11 @@ void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org) } } +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 8cdaa1151d2..85193aa8c1e 100644 --- a/include/linux/selection.h +++ b/include/linux/selection.h @@ -39,5 +39,6 @@ extern void putconsxy(struct vc_data *vc, unsigned char *p); 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 -- 2.46.0