lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 29 Jul 2019 21:22:00 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Tomi Valkeinen <tomi.valkeinen@...com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 229/293] drm/bridge: tc358767: read display_props in get_modes()

[ Upstream commit 3231573065ad4f4ecc5c9147b24f29f846dc0c2f ]

We need to know the link bandwidth to filter out modes we cannot
support, so we need to have read the display props before doing the
filtering.

To ensure we have up to date display props, call tc_get_display_props()
in the beginning of tc_connector_get_modes().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...com>
Reviewed-by: Andrzej Hajda <a.hajda@...sung.com>
Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528082747.3631-22-tomi.valkeinen@ti.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/bridge/tc358767.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index 6eebd8ad0c52..9705ca197b90 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1147,6 +1147,13 @@ static int tc_connector_get_modes(struct drm_connector *connector)
 	struct tc_data *tc = connector_to_tc(connector);
 	struct edid *edid;
 	unsigned int count;
+	int ret;
+
+	ret = tc_get_display_props(tc);
+	if (ret < 0) {
+		dev_err(tc->dev, "failed to read display props: %d\n", ret);
+		return 0;
+	}
 
 	if (tc->panel && tc->panel->funcs && tc->panel->funcs->get_modes) {
 		count = tc->panel->funcs->get_modes(tc->panel);
-- 
2.20.1



Powered by blists - more mailing lists