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98c437e3b9
Currently, the first buffer queued in the params node is returned immediately to userspace and a copy of it is saved in the field 'cur_params'. The copy is later used for the first configuration when the stream is initiated by one of selfpath/mainpath capture nodes. There are 3 problems with this implementation: - The first params buffer is applied and returned to userspace even if userspace never calls to streamon on the params node. - If the first params buffer is queued after the stream started on the params node then it will return to userspace but will never be used. - The frame_sequence of the first buffer is set to -1 if the main/selfpath did not start streaming. A correct implementation is to apply the first params buffer when stream is started from mainpath/selfpath and only if params is also streaming. The patch adds a new function 'rkisp1_params_apply_params_cfg' which takes a buffer from the buffers queue, apply it and returns it to userspace. The function is called from the irq handler and when main/selfpath stream starts - in the function 'rkisp1_params_config_parameter' Also remove the fields 'cur_params', 'is_first_params' which are no more needed. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Reported-by: kernel test robot <lkp@intel.com> Acked-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
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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.
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.