Hi All,
I am using 2011.3 4.5 linaro GCC(armv7-a vfpv3d16) to compile kernel
and modules. I select to compile all codecs as modules:
"config SND_SOC_ALL_CODECS
tristate "Build all ASoC CODEC drivers"
"
as M and I2C/SPI too.
Then in the kernel dir, run "make" to get both vmlinux and modules, I
found snd-soc-wm8974.ko, snd-soc-wm8940.ko and snd-soc-wm8510.ko will
fail due to "__aeabi_uldivmod undefined".
If i comment do_div() in these codec drivers, this issue will
disappear. But it is strange there are many codecs which use do_div()
too, for example:
sound/soc/codecs/max98088.c
sound/soc/codecs/max9850.c
sound/soc/codecs/wm8350.c
sound/soc/codecs/wm8400.c
sound/soc/codecs/wm8510.c
sound/soc/codecs/wm8580.c
sound/soc/codecs/wm8753.c
sound/soc/codecs/wm8804.c
sound/soc/codecs/wm8900.c
sound/soc/codecs/wm8904.c
sound/soc/codecs/wm8940.c
sound/soc/codecs/wm8955.c
sound/soc/codecs/wm8960.c
sound/soc/codecs/wm8974.c
sound/soc/codecs/wm8978.c
sound/soc/codecs/wm8985.c
sound/soc/codecs/wm8990.c
sound/soc/codecs/wm8991.c
sound/soc/codecs/wm8993.c
sound/soc/codecs/wm8994.c
sound/soc/codecs/wm8995.c
sound/soc/codecs/wm9081.c
but others can pass the compiling except those 3 modules. Is it due to
a wrong optimization by gcc?
Other information:
1. old tool-chains we are using can pass the compiling of the 3 modules.
2. If i built all codecs into kernel image, these 3 drivers don't
report error while compiling.
Thanks
Barry
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