On 05/19/2012 10:46 PM, Grant Likely wrote:
On Fri, 11 May 2012 14:34:46 -0700, David Daney <[email protected]> wrote:From: David Daney <[email protected]>Add the driver, link it into the kbuild system and provide device tree binding documentation. Signed-off-by: David Daney <[email protected]>Some comments below, but you can add my a-b: Acked-by: Grant Likely <[email protected]>
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+ p->register_base = (u64)devm_ioremap(&pdev->dev, res_mem->start, + resource_size(res_mem));Nasty cast. p->register_base needs to be an __iomem pointer variable.
No, it is only ever used as an argument to cvmx_{read,write}_csr(),
which want the u64 type.
The fact taht cvmx_read_csr accepts a uint64_t instead of an __iomem pointer looks really wrong. Why is it written that way?
Register addresses on OCTEON are 64-bits wide. In a 32-bit kernel, pointers are only 32-bits wide. Thus was born the cvmx_read_csr() function that takes a u64 address. We no longer support 32-bit kernels, but the legacy of the interface lives on. David Daney _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
