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authorEzequiel Garcia <[email protected]>2013-08-12 14:14:56 -0300
committerDavid Woodhouse <[email protected]>2013-08-30 21:35:00 +0100
commitf4db2e3a3315019c419a7ee8ebaf5d8b361be791 (patch)
tree4ebf093843df2edaf586c03eec08f3a9c533aa32 /scripts/stackusage
parent48cf7efa6be22e5ab42c16e2700e401f2e6f8bad (diff)
mtd: nand: pxa3xx: Make dma code dependent on dma capable platforms
This patch adds a macro ARCH_HAS_DMA to compile-out arch specific dma code, namely pxa_request_dma() and pxa_free_dma(). These symbols are available only in pxa, which makes impossible to build the driver in other platforms than ARCH_PXA. In order to handle non-dma capable platforms, we implement a fallbacks that allocate buffers as if 'use_dma=false', putting the dma related code under the ARCH_HAS_DMA conditional. Please note that the correct way to handle this is to migrate the dma code to use of the mmp_pdma dmaengine driver. However, currently this is not possible because the two dmaengine drivers can't work together. Signed-off-by: Ezequiel Garcia <[email protected]> Tested-by: Daniel Mack <[email protected]> Signed-off-by: Brian Norris <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
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