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Clang warns:
sound/soc/codecs/src4xxx.c:280:3: error: variable 'd' is used uninitialized whenever switch default is taken [-Werror,-Wsometimes-uninitialized]
default:
^~~~~~~
sound/soc/codecs/src4xxx.c:298:59: note: uninitialized use occurs here
ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_11, d);
^
sound/soc/codecs/src4xxx.c:223:20: note: initialize the variable 'd' to silence this warning
int val, pj, jd, d;
^
= 0
sound/soc/codecs/src4xxx.c:280:3: error: variable 'jd' is used uninitialized whenever switch default is taken [-Werror,-Wsometimes-uninitialized]
default:
^~~~~~~
sound/soc/codecs/src4xxx.c:293:59: note: uninitialized use occurs here
ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_10, jd);
^~
sound/soc/codecs/src4xxx.c:223:17: note: initialize the variable 'jd' to silence this warning
int val, pj, jd, d;
^
= 0
sound/soc/codecs/src4xxx.c:280:3: error: variable 'pj' is used uninitialized whenever switch default is taken [-Werror,-Wsometimes-uninitialized]
default:
^~~~~~~
sound/soc/codecs/src4xxx.c:288:59: note: uninitialized use occurs here
ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_0F, pj);
^~
sound/soc/codecs/src4xxx.c:223:13: note: initialize the variable 'pj' to silence this warning
int val, pj, jd, d;
^
= 0
3 errors generated.
The datasheet does not have any default values for these regmap values
so pick some arbitrary values and print to the user that this is the
case to silence the warnings.
Link: https://github.com/ClangBuiltLinux/linux/issues/1691
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@gmail.com>
Suggested-by: Matt Flax <flatmax@flatmax.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Matt Flax <flatmax@flatmax.com>
Link: https://lore.kernel.org/r/20220823151939.2493697-1-nathan@kernel.org
Signed-off-by: Mark Brown <broonie@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.