From 79a986721decf428ba539e6e2c941c987acce655 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Tue, 25 Jun 2019 11:20:42 +0200
Subject: [PATCH] dma-mapping: remove dma_max_pfn
These days, the DMA mapping code must bounce buffers for any unsupported
address. If the driver needs to optimize for natively supported ranges,
then it should use dma_get_required_mask.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
arch/arm/include/asm/dma-mapping.h | 7 -------
include/linux/dma-mapping.h | 7 -------
2 files changed, 14 deletions(-)
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 03ba90ffc0f8f..7e0486ad1318c 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -89,13 +89,6 @@ static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
}
#endif
-/* The ARM override for dma_max_pfn() */
-static inline unsigned long dma_max_pfn(struct device *dev)
-{
- return dma_to_pfn(dev, *dev->dma_mask);
-}
-#define dma_max_pfn(dev) dma_max_pfn(dev)
-
/* do not use this function in a driver */
static inline bool is_device_dma_coherent(struct device *dev)
{
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 6309a721394bf..8d13e28a8e075 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -729,13 +729,6 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
return -EIO;
}
-#ifndef dma_max_pfn
-static inline unsigned long dma_max_pfn(struct device *dev)
-{
- return (*dev->dma_mask >> PAGE_SHIFT) + dev->dma_pfn_offset;
-}
-#endif
-
static inline int dma_get_cache_alignment(void)
{
#ifdef ARCH_DMA_MINALIGN
--
2.30.2