From: "Lowry Li (Arm Technology China)" Lowry.Li@arm.com

[ Upstream commit 8581d51055a08cc6eb061c8856062290e8582ce4 ]

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-em... Signed-off-by: Sasha Levin sashal@kernel.org --- .../drm/arm/display/komeda/komeda_wb_connector.c | 3 +-- drivers/gpu/drm/arm/malidp_mw.c | 4 ++-- drivers/gpu/drm/drm_atomic.c | 13 +++++++++---- drivers/gpu/drm/rcar-du/rcar_du_writeback.c | 4 ++-- drivers/gpu/drm/vc4/vc4_txp.c | 5 ++--- 5 files changed, 16 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c index 2851cac94d869..23fbee268119f 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c @@ -43,9 +43,8 @@ komeda_wb_encoder_atomic_check(struct drm_encoder *encoder, struct komeda_data_flow_cfg dflow; int err;

- if (!writeback_job || !writeback_job->fb) { + if (!writeback_job) return 0; - }

if (!crtc_st->active) { DRM_DEBUG_ATOMIC("Cannot write the composition result out on a inactive CRTC.\n"); diff --git a/drivers/gpu/drm/arm/malidp_mw.c b/drivers/gpu/drm/arm/malidp_mw.c index 2e812525025dd..a59227b2cdb55 100644 --- a/drivers/gpu/drm/arm/malidp_mw.c +++ b/drivers/gpu/drm/arm/malidp_mw.c @@ -130,7 +130,7 @@ malidp_mw_encoder_atomic_check(struct drm_encoder *encoder, struct drm_framebuffer *fb; int i, n_planes;

- if (!conn_state->writeback_job || !conn_state->writeback_job->fb) + if (!conn_state->writeback_job) return 0;

fb = conn_state->writeback_job->fb; @@ -247,7 +247,7 @@ void malidp_mw_atomic_commit(struct drm_device *drm,

mw_state = to_mw_state(conn_state);

- if (conn_state->writeback_job && conn_state->writeback_job->fb) { + if (conn_state->writeback_job) { struct drm_framebuffer *fb = conn_state->writeback_job->fb;

DRM_DEV_DEBUG_DRIVER(drm->dev, diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 419381abbdd16..14aeaf7363210 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -430,10 +430,15 @@ static int drm_atomic_connector_check(struct drm_connector *connector, return -EINVAL; }

- if (writeback_job->out_fence && !writeback_job->fb) { - DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] requesting out-fence without framebuffer\n", - connector->base.id, connector->name); - return -EINVAL; + if (!writeback_job->fb) { + if (writeback_job->out_fence) { + DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] requesting out-fence without framebuffer\n", + connector->base.id, connector->name); + return -EINVAL; + } + + drm_writeback_cleanup_job(writeback_job); + state->writeback_job = NULL; }

return 0; diff --git a/drivers/gpu/drm/rcar-du/rcar_du_writeback.c b/drivers/gpu/drm/rcar-du/rcar_du_writeback.c index ae07290bba6a4..04efa78d70b6e 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_writeback.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_writeback.c @@ -147,7 +147,7 @@ static int rcar_du_wb_enc_atomic_check(struct drm_encoder *encoder, struct drm_device *dev = encoder->dev; struct drm_framebuffer *fb;

- if (!conn_state->writeback_job || !conn_state->writeback_job->fb) + if (!conn_state->writeback_job) return 0;

fb = conn_state->writeback_job->fb; @@ -221,7 +221,7 @@ void rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc, unsigned int i;

state = rcrtc->writeback.base.state; - if (!state || !state->writeback_job || !state->writeback_job->fb) + if (!state || !state->writeback_job) return;

fb = state->writeback_job->fb; diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c index 96f91c1b4b6e6..e92fa12750343 100644 --- a/drivers/gpu/drm/vc4/vc4_txp.c +++ b/drivers/gpu/drm/vc4/vc4_txp.c @@ -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;