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| author | Zeng Jingxiang <linuszeng@tencent.com> | 2022-07-27 15:31:19 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-21 12:39:12 +0200 |
| commit | 912f84e15e94ab87f5a7156aa1870090373d8304 (patch) | |
| tree | 6e1452a707bd0975ddc80121488a3130ae469a77 /drivers/gpu | |
| parent | 5121d040d385ad5f4640275ca0e42e2fdf597127 (diff) | |
| download | linux-stable-912f84e15e94ab87f5a7156aa1870090373d8304.tar.gz linux-stable-912f84e15e94ab87f5a7156aa1870090373d8304.tar.bz2 linux-stable-912f84e15e94ab87f5a7156aa1870090373d8304.zip | |
gpu: lontium-lt9611: Fix NULL pointer dereference in lt9611_connector_init()
[ Upstream commit ef8886f321c5dab8124b9153d25afa2a71d05323 ]
A NULL check for bridge->encoder shows that it may be NULL, but it
already been dereferenced on all paths leading to the check.
812 if (!bridge->encoder) {
Dereference the pointer bridge->encoder.
810 drm_connector_attach_encoder(<9611->connector, bridge->encoder);
Signed-off-by: Zeng Jingxiang <linuszeng@tencent.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220727073119.1578972-1-zengjx95@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/bridge/lontium-lt9611.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c index 8a60e83482a0..5fccacc159f0 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -813,13 +813,14 @@ static int lt9611_connector_init(struct drm_bridge *bridge, struct lt9611 *lt961 drm_connector_helper_add(<9611->connector, <9611_bridge_connector_helper_funcs); - drm_connector_attach_encoder(<9611->connector, bridge->encoder); if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; } + drm_connector_attach_encoder(<9611->connector, bridge->encoder); + return 0; } |