linux-kernel - [PATCH 3/6] vt: invoke notifier on screen size change

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Message-Id: <20190109035504.8413-4-nicolas.pitre@linaro.org>
Date:   Tue,  8 Jan 2019 22:55:01 -0500
From:   Nicolas Pitre <nicolas.pitre@...aro.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Dave Mielke <Dave@...lke.cc>, linux-kernel@...r.kernel.org
Subject: [PATCH 3/6] vt: invoke notifier on screen size change

User space using poll() on /dev/vcs devices are not awaken when a
screen size change occurs. Let's fix that.

Signed-off-by: Nicolas Pitre <nico@...aro.org>
---
 drivers/tty/vt/vt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 5b8b0e33f9..bba75560d1 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1272,6 +1272,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
 	if (con_is_visible(vc))
 		update_screen(vc);
 	vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num);
+	notify_update(vc);
 	return err;
 }
 
-- 
2.20.1