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reset conn->state->best_encoder, otherwise will dump the following warning log at one crtc multiple connector platform: WARNING: CPU: 6 PID: 61 at drivers/gpu/drm/drm_atomic_helper.c:225 set_best_encoder.isra.3+0x40/0xf0 [ 1.520856] Call trace: [ 1.520868] set_best_encoder.isra.3+0x40/0xf0 [ 1.520896] drm_atomic_helper_check_modeset+0x670/0xa60 [ 1.520907] drm_atomic_helper_check+0x1c/0xc0 [ 1.520920] drm_atomic_check_only+0x354/0x640 [ 1.520932] drm_atomic_commit+0x18/0x58 [ 1.520960] rockchip_drm_bind+0x12f0/0x18e8 [ 1.520973] try_to_bring_up_master+0x144/0x1a8 [ 1.520985] component_master_add_with_match+0xd4/0x130 [ 1.520996] rockchip_drm_platform_probe+0x178/0x2e8 [ 1.521022] platform_drv_probe+0x50/0xa8 [ 1.521033] really_probe+0x200/0x2b0 [ 1.521043] driver_probe_device+0x58/0x100 [ 1.521054] __device_attach_driver+0x90/0xc0 [ 1.521064] bus_for_each_drv+0x70/0xc8 [ 1.521074] __device_attach+0xdc/0x138 [ 1.521097] device_initial_probe+0x10/0x18 [ 1.521107] bus_probe_device+0x94/0xa0 [ 1.521118] deferred_probe_work_func+0x80/0xb8 [ 1.521131] process_one_work+0x1a0/0x418 [ 1.521143] worker_thread+0x1e4/0x3e0 [ 1.521154] kthread+0x12c/0x158 [ 1.521166] ret_from_fork+0x10/0x18 [ 1.521189] ---[ end trace bb121b6492800165 ]--- Change-Id: I64a35a13819add55a565165198b1313f8cfc7597 Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.