From: Eric Miao Date: Sat, 5 Jun 2010 07:16:17 +0000 (+0800) Subject: [ARM] pxa: remove now unnecessary dma_needs_bounce() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4fa5518;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git [ARM] pxa: remove now unnecessary dma_needs_bounce() With a correct dev->dma_mask before calling dmabounce_register_dev(), dma_needs_bounce() is not necessary. The sa1111, though, is a bit complicated. Until it's fully understood and fixed, dma_needs_bounce() for sa1111 is kept if CONFIG_SA1111 is enabled with no side effect (with the condition of machine_is_*) Thanks for Mike Rapoport to fix one error in the original version of the patch and get this tested. Acked-by: Mike Rapoport Signed-off-by: Eric Miao --- diff --git a/arch/arm/common/it8152.c b/arch/arm/common/it8152.c index 7974baacafc..6c091356245 100644 --- a/arch/arm/common/it8152.c +++ b/arch/arm/common/it8152.c @@ -263,14 +263,6 @@ static int it8152_pci_platform_notify_remove(struct device *dev) return 0; } -int dma_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size) -{ - dev_dbg(dev, "%s: dma_addr %08x, size %08x\n", - __func__, dma_addr, size); - return (dev->bus == &pci_bus_type) && - ((dma_addr + size - PHYS_OFFSET) >= SZ_64M); -} - int __init it8152_pci_setup(int nr, struct pci_sys_data *sys) { it8152_io.start = IT8152_IO_BASE + 0x12000; diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 69ce0727edb..b5ccc6a993d 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -298,7 +298,15 @@ extern void dmabounce_unregister_dev(struct device *); * DMA access and 1 if the buffer needs to be bounced. * */ +#ifdef CONFIG_SA1111 extern int dma_needs_bounce(struct device*, dma_addr_t, size_t); +#else +static inline int dma_needs_bounce(struct device *dev, dma_addr_t addr, + size_t size) +{ + return 0; +} +#endif /* * The DMA API, implemented by dmabounce.c. See below for descriptions.