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892c788d73
The erase colour calculation for fbcon clearing should use get_color instead of attr_col_ec, like everything else. The latter is similar but is not correct. For example it's missing the depth dependent remapping and doesn't care about blanking. The problem can be reproduced by setting up the background colour to grey (vt.color=0x70) and having an fbcon console set to 2bpp (4 shades of gray). Now the background attribute should be 1 (dark gray) on the console. If the screen is scrolled when pressing enter in a shell prompt at the bottom line then the new line is cleared using colour 7 instead of 1. That's not something fillrect likes (at 2bbp it expect 0-3) so the result is interesting. This patch switches to get_color with vc_video_erase_char to determine the erase colour from attr_col_ec. That makes the latter function redundant as no other users were left. Use correct erase colour for clearing in fbcon Signed-off-by: Zsolt Kajtar <soci@c64.rulez.org> Signed-off-by: Helge Deller <deller@gmx.de>
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 reStructuredText 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.