Hello Philipp,
Am 18.05.2016 um 14:56 schrieb Philipp Zabel:
The component master driver imx-drm-core matches component devices using
their of_node. Since commit 950b410dd1ab ("gpu: ipu-v3: Fix imx-ipuv3-crtc
module autoloading"), the imx-ipuv3-crtc dev->of_node is not set during
probing. Before that, of_node was set and caused an of: modalias to be
used instead of the platform: modalias, which broke module autoloading.
On the other hand, if dev->of_node is not set yet when the imx-ipuv3-crtc
probe function calls component_add, component matching in imx-drm-core
fails. While dev->of_node will be set once the next component tries to
bring up the component master, imx-drm-core component binding will never
succeed if one of the crtc devices is probed last.
Add of_node to the component platform data and match against the
pdata->of_node instead of dev->of_node in imx-drm-core to work around
this problem.
Cc: <stable@xxxxxxxxxxxxxxx> # 4.4.x
Fixes: 950b410dd1ab ("gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading")
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Tested-by: Fabio Estevam <fabio.estevam@xxxxxxx>
---
Changes since v1:
- Also set the crtc->port to the of_node from platform data
---
drivers/gpu/drm/imx/imx-drm-core.c | 8 ++++++++
drivers/gpu/drm/imx/ipuv3-crtc.c | 2 +-
drivers/gpu/ipu-v3/ipu-common.c | 5 +++--
include/video/imx-ipu-v3.h | 2 ++
4 files changed, 14 insertions(+), 3 deletions(-)
Thanks! This fixes the aristainetos2 board, see log:
http://xeidos.ddns.net/buildbot/builders/ari_lx/builds/0/steps/shell/logs/tbotlog
so:
Tested-by: Heiko Schocher <hs@xxxxxxx>
bye,
Heiko
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