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drm: Free the writeback_job when it with an empty fb

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Adds the check if the writeback_job with an empty fb, then it should
be freed in atomic_check phase.

With this change, the driver users will not check empty fb case any more.
So refined accordingly.

Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1564571048-15029-2-git-send-email-lowry.li@arm.com
This commit is contained in:
Lowry Li (Arm Technology China)
2019-07-31 11:04:38 +00:00
committed by james qian wang (Arm Technology China)
parent 21670bd78a
commit 8581d51055
5 changed files with 16 additions and 13 deletions
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5
drivers/gpu/drm/vc4/vc4_txp.c
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@@ -229,7 +229,7 @@ static int vc4_txp_connector_atomic_check(struct drm_connector *conn,
int i;
conn_state = drm_atomic_get_new_connector_state(state, conn);
if (!conn_state->writeback_job || !conn_state->writeback_job->fb)
if (!conn_state->writeback_job)
return 0;
crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
@@ -269,8 +269,7 @@ static void vc4_txp_connector_atomic_commit(struct drm_connector *conn,
u32 ctrl;
int i;
if (WARN_ON(!conn_state->writeback_job ||
!conn_state->writeback_job->fb))
if (WARN_ON(!conn_state->writeback_job))
return;
mode = &conn_state->crtc->state->adjusted_mode;