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c08f0a92f4
The loop optimizer seems to go astray here, and produces some warnings that don't seem valid. Still, the code can be simplified -- just clear the whole array at the beginning, and fill in whatever values are valid on the platform. Warnings before this change (GCC 8.2.0 ARM allmodconfig): In file included from ../sound/pci/echoaudio/gina24.c:115: ../sound/pci/echoaudio/echoaudio.c: In function 'snd_echo_vumeters_get': ../sound/pci/echoaudio/echoaudio_dsp.c:647:9: warning: iteration 1073741824 invokes undefined behavior [-Waggressive-loop-optimizations] In file included from ../sound/pci/echoaudio/layla24.c:112: ../sound/pci/echoaudio/echoaudio.c: In function 'snd_echo_vumeters_get': ../sound/pci/echoaudio/echoaudio_dsp.c:658:9: warning: iteration 1073741824 invokes undefined behavior [-Waggressive-loop-optimizations] ../sound/pci/echoaudio/echoaudio_dsp.c:647:9: warning: iteration 1073741824 invokes undefined behavior [-Waggressive-loop-optimizations] Signed-off-by: Olof Johansson <olof@lixom.net> Link: https://lore.kernel.org/r/20191207224953.25944-1-olof@lixom.net Signed-off-by: Takashi Iwai <tiwai@suse.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 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.