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820949bbf3
commit e4fc307d8e24f122402907ebf585248cad52841d upstream. This reverts commit 864f9963ec6b4b76d104d595ba28110b87158003. The patch is wrong as it checks vc_origin against vc_screenbuf, while in text mode it should compare against vga_vram_base. As such it broke VGA text scrolling, which can be reproduced like this: (1) boot a kernel that is configured to use text mode VGA-console (2) type commands: ls -l /usr/bin | less -S (3) scroll up/down with cursor-down/up keys Reported-by: Jari Ruusu <jariruusu@protonmail.com> Cc: stable@vger.kernel.org Cc: Yi Yang <yiyang13@huawei.com> Cc: GONG Ruiqi <gongruiqi1@huawei.com> Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.