linux-kernel - [PATCH] gpu/drm: ingenic: Fix bogus crtc_atomic

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>] [day] [month] [year] [list]

Date:   Mon,  4 May 2020 02:07:20 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>
Cc:     od@...c.me, "H . Nikolaus Schaller" <hns@...delico.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Paul Cercueil <paul@...pouillou.net>, stable@...r.kernel.org
Subject: [PATCH] gpu/drm: ingenic: Fix bogus crtc_atomic_check callback

The code was comparing the SoC's maximum height with the mode's width,
and vice-versa. D'oh.

Cc: stable@...r.kernel.org # v5.6+
Fixes: a7c909b7c037 ("gpu/drm: ingenic: Check for display size in CRTC atomic check")
Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 drivers/gpu/drm/ingenic/ingenic-drm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.c b/drivers/gpu/drm/ingenic/ingenic-drm.c
index 9dfe7cb530e1..5f19e07c152e 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm.c
@@ -328,8 +328,8 @@ static int ingenic_drm_crtc_atomic_check(struct drm_crtc *crtc,
 	if (!drm_atomic_crtc_needs_modeset(state))
 		return 0;
 
-	if (state->mode.hdisplay > priv->soc_info->max_height ||
-	    state->mode.vdisplay > priv->soc_info->max_width)
+	if (state->mode.hdisplay > priv->soc_info->max_width ||
+	    state->mode.vdisplay > priv->soc_info->max_height)
 		return -EINVAL;
 
 	rate = clk_round_rate(priv->pix_clk,
-- 
2.26.2