Hi Silverstri,
On Thu, Feb 6, 2014 at 7:56 AM, m silverstri <[email protected] > wrote: > Hi, > > I am developing a kernel driver. I need to allocate buffer in the > kernel driver and pass the physical address of the buffer to the Chip > register so that it can generate output there. > > I tried using kmalloc() but I don' get any output from the chip. > If your device is not having an iommu, you need to convert the address returned by kmalloc using __pa(addr) before you program the chip. Thanks, Arun > > Is there a better way to achieve what I want? > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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