Hi all, In Function qtd_fill() (FILE - ehci-q.c) , we get the DMA'able buffer address, but when we fill the qTD, we convert the buffer address to Little Endian. and assigning it as follows
qtd->hw_buf [0] = cpu_to_le32 ((u32)addr); qtd->hw_buf_hi [0] = cpu_to_le32 ((u32)(addr >> 32)); If my processor is ARM based, i get the DMA address in Big-Endian, and i convert the DMA address to Little-Endian and assigning in Qtd Hardware Buffers. My EHCI Controller is ARC. USB transfers are Little Endian. But when the controller tries to do DMA of the transfer, the address in the QTD Hardware buffer is different due to endianess. Is my inference right. OR Correct me whther the above obserevation will make a difference in ARM platform due to endianess Thanks Rak _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
