From: Karol Herbst <kherbst@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Ben Skeggs <bskeggs@redhat.com>, Lyude Paul <lyude@redhat.com>,
dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
Karol Herbst <kherbst@redhat.com>,
Olaf Skibbe <news@kravcenko.com>
Subject: [PATCH] drm/nouveau/disp: Revert a NULL check inside nouveau_connector_get_modes
Date: Sat, 5 Aug 2023 12:18:13 +0200 [thread overview]
Message-ID: <20230805101813.2603989-1-kherbst@redhat.com> (raw)
The original commit adding that check tried to protect the kenrel against
a potential invalid NULL pointer access.
However we call nouveau_connector_detect_depth once without a native_mode
set on purpose for non LVDS connectors and this broke DP support in a few
cases.
Cc: Olaf Skibbe <news@kravcenko.com>
Cc: Lyude Paul <lyude@redhat.com>
Closes: https://gitlab.freedesktop.org/drm/nouveau/-/issues/238
Closes: https://gitlab.freedesktop.org/drm/nouveau/-/issues/245
Fixes: 20a2ce87fbaf8 ("drm/nouveau/dp: check for NULL nv_connector->native_mode")
Signed-off-by: Karol Herbst <kherbst@redhat.com>
---
drivers/gpu/drm/nouveau/nouveau_connector.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index f75c6f09dd2af..a2e0033e8a260 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -967,7 +967,7 @@ nouveau_connector_get_modes(struct drm_connector *connector)
/* Determine display colour depth for everything except LVDS now,
* DP requires this before mode_valid() is called.
*/
- if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS && nv_connector->native_mode)
+ if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
nouveau_connector_detect_depth(connector);
/* Find the native mode if this is a digital panel, if we didn't
--
2.41.0
next reply other threads:[~2023-08-05 10:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-05 10:18 Karol Herbst [this message]
2023-08-07 20:32 ` Lyude Paul
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