MIPS: DMA: Allow platforms to override only the post DMA hook
Instead of having platforms to copy the entirety of
mach-generic/dma-coherence.h, check whether these platforms have already
defined a plat_post_dma_flush hook, and if not, provide an inline stub.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Patchwork: https://patchwork.linux-mips.org/patch/9725/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/mach-generic/dma-coherence.h b/arch/mips/include/asm/mach-generic/dma-coherence.h
index 6713309..0f8a354 100644
--- a/arch/mips/include/asm/mach-generic/dma-coherence.h
+++ b/arch/mips/include/asm/mach-generic/dma-coherence.h
@@ -52,9 +52,11 @@
return coherentio;
}
+#ifndef plat_post_dma_flush
static inline void plat_post_dma_flush(struct device *dev)
{
}
+#endif
#ifdef CONFIG_SWIOTLB
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)