I am trying to compile kernel for pogoplug pro. So I downloaded arm-2010.09-50-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 toolchain and I can compile modules just fine. When I try to compile kernel I get errors. I hope somone can help me fix it.

drivers/built-in.o: In function `hwraid1_report_read_error':
ox820hwraid.c:(.text+0x819bc): undefined reference to `md_error'
drivers/built-in.o: In function `post_sync_read':
ox820hwraid.c:(.text+0x81a2c): undefined reference to `md_error'
drivers/built-in.o: In function `hwraid1_wait_barrier':
ox820hwraid.c:(.text+0x83b48): undefined reference to `md_wakeup_thread'
ox820hwraid.c:(.text+0x83b50): undefined reference to `md_wakeup_thread'
ox820hwraid.c:(.text+0x83b90): undefined reference to `md_wakeup_thread'
ox820hwraid.c:(.text+0x83ba0): undefined reference to `md_wakeup_thread'
drivers/built-in.o: In function `hwraid1_report_single_error':
ox820hwraid.c:(.text+0x84008): undefined reference to `bitmap_startwrite'
ox820hwraid.c:(.text+0x84018): undefined reference to `md_error'
ox820hwraid.c:(.text+0x84030): undefined reference to `bitmap_endwrite'
drivers/built-in.o: In function `hwraid1_report_double_error.clone.15':
ox820hwraid.c:(.text+0x842f4): undefined reference to `bitmap_startwrite'
ox820hwraid.c:(.text+0x84304): undefined reference to `md_error'
ox820hwraid.c:(.text+0x84314): undefined reference to `md_error'
ox820hwraid.c:(.text+0x8432c): undefined reference to `bitmap_endwrite'
drivers/built-in.o: In function `hwraid1_end_barrier':
ox820hwraid.c:(.text+0x852dc): undefined reference to `md_write_end'
drivers/built-in.o: In function `hwraid1_sync_request':
ox820hwraid.c:(.text+0x853b0): undefined reference to `bitmap_close_sync'
ox820hwraid.c:(.text+0x85474): undefined reference to `bitmap_start_sync'
ox820hwraid.c:(.text+0x854d0): undefined reference to `bitmap_cond_end_sync'
ox820hwraid.c:(.text+0x85558): undefined reference to `md_wakeup_thread'
ox820hwraid.c:(.text+0x857c0): undefined reference to `bitmap_start_sync'
ox820hwraid.c:(.text+0x857f8): undefined reference to `md_wakeup_thread'
ox820hwraid.c:(.text+0x8599c): undefined reference to `bitmap_end_sync'
ox820hwraid.c:(.text+0x85a08): undefined reference to `md_wakeup_thread'
ox820hwraid.c:(.text+0x85a78): undefined reference to `raid1_lower_barrier'
drivers/built-in.o: In function `sync_work':
ox820hwraid.c:(.text+0x85ec4): undefined reference to `raid1_lower_barrier'
ox820hwraid.c:(.text+0x85ee0): undefined reference to `md_done_sync'
ox820hwraid.c:(.text+0x86040): undefined reference to `md_done_sync'
ox820hwraid.c:(.text+0x86054): undefined reference to `raid1_lower_barrier'
drivers/built-in.o: In function `post_sync_write':
ox820hwraid.c:(.text+0x860f4): undefined reference to `bitmap_end_sync'
ox820hwraid.c:(.text+0x86120): undefined reference to `md_error'
ox820hwraid.c:(.text+0x86128): undefined reference to `raid1_lower_barrier'
ox820hwraid.c:(.text+0x8614c): undefined reference to `md_done_sync'