Regarding TSI108 ethernet DMA issue

Thirumalai Pachamuthu thirumalai.p at
Thu Aug 20 14:15:02 EST 2009

Hi all,
      I am trying to port linux 2.6.30 for my TSI108 based custom board
where i am getting the following kernel panic message. I found that it was
due to dma allocation function call particularly dma_alloc_coherent() of
tsi108_open function. When we see the implementation of dma_alloc_coherent.
It was bit changed from the previous linux versions it seems.
      The implementation of dma_alloc_coherent was kept on the
arch/powerpc/include/asm/dma-mapping.h file. Earlier implementation is not
considering the first parameter what the tsi108 driver is passing as NULL.
But the current implementation is considering this parameter and because of
this the panic is coming what i believe.

      So kindly let me know any patches for this problem or any fixes.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the Linuxppc-dev mailing list