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[ Upstream commit2189e928b6] When enabling CONFIG_RMW_INSNS in e.g. a Coldfire build: {standard input}:3068: Error: invalid instruction for this architecture; needs 68020 or higher (68020 [68k, 68ec020], 68030 [68ec030], 68040 [68ec040], 68060 [68ec060]) -- statement `casl %d4,%d0,(%a6)' ignored Fix this by (a) adding a new config symbol to track if support for any CPU that lacks the CAS instruction is enabled, and (b) making CONFIG_RMW_INSNS depend on the new symbol not being set. Fixes:0e152d8050("m68k: reorganize Kconfig options to improve mmu/non-mmu selections") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20210725104413.318932-1-geert@linux-m68k.org Signed-off-by: Sasha Levin <sashal@kernel.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.