Hi , I get the same problem as in http://lists.ozlabs.org/pipermail/linuxppc-dev/2009-November/077394.html
posted by Jonathan. One solution suggested is using get_user_pages(), which give a pointer of user space buffer to the kernel module to DMA( as I got it) But the code in teh above link tries to get the kernel buffer pointer in to the user space. What I want to know is what's wrong/what modifications should be done to the above code to achieve this? Is this a bad aproach to access the DMA buffer in user space? Thanx in advance.
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