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disp: msm: add proper null checks and propagate error

Selaa lähdekoodia 
Fix possible null pointer dereferencing and propagate error
code during early return.

Signed-off-by: Samantha Tran <samtran@codeaurora.org>
This commit is contained in:
Samantha Tran
2019-08-06 13:46:48 -07:00
vanhempi c70f647143
commit c00bf10768
2 muutettua tiedostoa jossa 10 lisäystä ja 3 poistoa
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9
msm/dp/dp_drm.c
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@@ -493,12 +493,17 @@ int dp_connector_atomic_check(struct drm_connector *connector,
struct drm_connector_state *c_state)
{
struct sde_connector *sde_conn;
struct drm_connector_state *old_state =
drm_atomic_get_old_connector_state(c_state->state, connector);
struct drm_connector_state *old_state;
if (!connector || !display)
return -EINVAL;
old_state =
drm_atomic_get_old_connector_state(c_state->state, connector);
if (!old_state)
return -EINVAL;
sde_conn = to_sde_connector(connector);
/*