From: Nicolas Pitre <nicolas.pitre@linaro.org>
Date: Mon, 15 Jan 2018 16:04:22 +0000 (+0100)
Subject: console/dummy: leave .con_font_get set to NULL
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=724ba8b30b044aa0d94b1cd374fc15806cdd6f18;p=openwrt%2Fstaging%2Fblogic.git

console/dummy: leave .con_font_get set to NULL

When this method is set, the caller expects struct console_font fields
to be properly initialized when it returns. Leave it unset otherwise
nonsensical (leaked kernel stack) values are returned to user space.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---

diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
index 9269d5685239..b90ef96e43d6 100644
--- a/drivers/video/console/dummycon.c
+++ b/drivers/video/console/dummycon.c
@@ -67,7 +67,6 @@ const struct consw dummy_con = {
     .con_switch =	DUMMY,
     .con_blank =	DUMMY,
     .con_font_set =	DUMMY,
-    .con_font_get =	DUMMY,
     .con_font_default =	DUMMY,
     .con_font_copy =	DUMMY,
 };