编译内核出错,求高手指点

wuyul510

小弟添加声卡驱动,编译内核时有如下错误:
sound/built-in.o(.text+0x98: In function `$a':
: undefined reference to `s3c2410_dma_ctrl'
sound/built-in.o(.text+0xc60): In function `audio_sync':
: undefined reference to `s3c2410_dma_enqueue'
sound/built-in.o(.text+0x100c): In function `$a':
: undefined reference to `s3c2410_dma_enqueue'
sound/built-in.o(.text+0x1174): In function `$a':
: undefined reference to `s3c2410_dma_enqueue'
sound/built-in.o(.text+0x12c0): In function `$a':
: undefined reference to `s3c2410_dma_enqueue'
sound/built-in.o(.text+0x2044): In function `$a':
: undefined reference to `s3c2410_dma_set_buffdone_fn'
sound/built-in.o(.text+0x2050): In function `$a':
: undefined reference to `s3c2410_dma_free'
sound/built-in.o(.init.text+0x9: In function `$a':
: undefined reference to `s3c2410_dma_request'
sound/built-in.o(.init.text+0xb0): In function `$a':
: undefined reference to `s3c2410_dma_devconfig'
sound/built-in.o(.init.text+0xc0): In function `$a':
: undefined reference to `s3c2410_dma_config'
sound/built-in.o(.init.text+0xcc): In function `$a':
: undefined reference to `s3c2410_dma_set_buffdone_fn'
sound/built-in.o(.init.text+0xd: In function `$a':
: undefined reference to `s3c2410_dma_setflags'
sound/built-in.o(.init.text+0x100): In function `$a':
: undefined reference to `s3c2410_dma_request'
sound/built-in.o(.init.text+0x110): In function `$a':
: undefined reference to `s3c2410_dma_set_buffdone_fn'

盼高手指点