µClinux setup for USBHOST error

[Altera_Forum]

Hi all, 

 In µclinux setup for USB ****************************************************  In kernel menuconfig,  Turn on SCSI device and SCSI disk.  SCSI device support --->  [ ] RAID Transport Class  [*] SCSI device support  [ ] SCSI target support  [*] legacy /proc/scsi/ support   *** SCSI support type (disk, tape, CD-ROM) ***  [*] SCSI disk support  ***********************************************   When i do it i have this code error :   drivers/built-in.o(.text+0x28c00): In function `scsi_dma_map': /home/hayder/nios2-linux/linux-2.6/include/scsi/scsi_cmnd.h:154: undefined reference to `dma_map_sg' drivers/built-in.o(.text+0x28c48): In function `scsi_dma_unmap': /home/hayder/nios2-linux/linux-2.6/include/scsi/scsi_cmnd.h:154: undefined reference to `dma_unmap_sg  ***********************************************************  it's normal i don't have dma in my design... I have to modify something???  Thanks for all

[Altera_Forum]

I verified that i have the same files like in this patch 

http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc6/2.6.22-rc6-mm1/broken-out/scsi-dont-build-scsi_dma_mapunmap-for-has_dma.patch (nothing to change)   someone can help me!

[Altera_Forum]

I solved the problem by changing uclinux version from linux-20080619 to 20090730

[Altera_Forum]

i have solved it by commenting that function close to the error line ; 

or, you can try use" return 0 " instead ;

[Altera_Forum]

but i can't find it ,i only get the nios2-uclinux-20120826