$ make CONFIG_DEBUG_SECTION_MISMATCH=y zImage modules
...
WARNING: vmlinux.o(.data+0x1f858): Section mismatch in reference from the variable udc_driver to the function .init.text:fsl_udc_probe()
The variable udc_driver references
the function __init fsl_udc_probe()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
GEN .version
CHK include/generated/compile.h
UPD include/generated/compile.h
CC init/version.o
LD init/built-in.o
LD .tmp_vmlinux1
KSYM .tmp_kallsyms1.S
AS .tmp_kallsyms1.o
LD .tmp_vmlinux2
KSYM .tmp_kallsyms2.S
AS .tmp_kallsyms2.o
LD vmlinux
SYSMAP System.map
SYSMAP .tmp_System.map
OBJCOPY arch/arm/boot/Image
Kernel: arch/arm/boot/Image is ready
GZIP arch/arm/boot/compressed/piggy.gzip
AS arch/arm/boot/compressed/piggy.gzip.o
CC arch/arm/boot/compressed/misc.o
CC arch/arm/boot/compressed/decompress.o
SHIPPED arch/arm/boot/compressed/lib1funcs.S
AS arch/arm/boot/compressed/lib1funcs.o
LD arch/arm/boot/compressed/vmlinux
OBJCOPY arch/arm/boot/zImage
Kernel: arch/arm/boot/zImage is ready
Building modules, stage 2.
MODPOST 55 modules
...
WARNING: drivers/usb/gadget/g_serial.o(.data+0x240): Section mismatch in reference from the variable gserial_driver to the function .init.text:gs_bind()
The variable gserial_driver references
the function __init gs_bind()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
ERROR: "soc_codec_dev_mxs" [sound/soc/mxs/snd-soc-mxs-evk-adc.ko] undefined!
ERROR: "mxs_codec_dai" [sound/soc/mxs/snd-soc-mxs-evk-adc.ko] undefined!
ERROR: "mxs_init_lcdif" [drivers/video/mxs/mxsfb.ko] undefined!
ERROR: "mxs_reset_block" [drivers/mmc/host/mxs-mmc.ko] undefined!
ERROR: "mxsfb_get_info" [drivers/media/video/mxs_pxp.ko] undefined!
ERROR: "mxsfb_cfg_pxp" [drivers/media/video/mxs_pxp.ko] undefined!
ERROR: "input_register_polled_device" [drivers/hwmon/mxc_mma7450.ko] undefined!
ERROR: "input_allocate_polled_device" [drivers/hwmon/mxc_mma7450.ko] undefined!
ERROR: "input_free_polled_device" [drivers/hwmon/mxc_mma7450.ko] undefined!
ERROR: "input_unregister_polled_device" [drivers/hwmon/mxc_mma7450.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2
Ядро патченое, из git freescale. Однако, подобные проблемы (undefined!) наблюдаются и при сборке linux-2.6.34-gentoo-r12.