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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>
7d3ac70d82