path: root/Documentation/devicetree/bindings/input/gpio-keys.txt
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authorLars-Peter Clausen <lars@metafoo.de>2014-12-03 16:07:28 +0100
committerMichal Simek <michal.simek@xilinx.com>2014-12-17 12:59:59 +0100
commit3a8e3265179b7e6394d7aab4d6df5651b49e7243 (patch)
tree82194a886cb05fe27ba3ddf0dca4ec05c3977e4a /Documentation/devicetree/bindings/input/gpio-keys.txt
parentLinux 3.18 (diff)
microblaze: Fix mmap for cache coherent memory
When running in non-cache coherent configuration the memory that was allocated with dma_alloc_coherent() has a custom mapping and so there is no 1-to-1 relationship between the kernel virtual address and the PFN. This means that virt_to_pfn() will not work correctly for those addresses and the default mmap implementation in the form of dma_common_mmap() will map some random, but not the requested, memory area. Fix this by providing a custom mmap implementation that looks up the PFN from the page table rather than using virt_to_pfn. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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