[PATCH 17/44] hexagon: switch to use ->mapping_error for error reporting
From: hch@lst.de (Christoph Hellwig)
Date: 2017-06-16 18:12:35
Also in:
dri-devel, linux-iommu, linux-mips, linux-s390, linux-samsung-soc, linux-sh, linux-tegra, linuxppc-dev, lkml, netdev, sparclinux
Subsystem:
qualcomm hexagon architecture, the rest · Maintainers:
Brian Cain, Linus Torvalds
Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Richard Kuo <redacted> --- arch/hexagon/include/asm/dma-mapping.h | 2 -- arch/hexagon/kernel/dma.c | 12 +++++++++--- arch/hexagon/kernel/hexagon_ksyms.c | 1 - 3 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h
index d3a87bd9b686..00e3f10113b0 100644
--- a/arch/hexagon/include/asm/dma-mapping.h
+++ b/arch/hexagon/include/asm/dma-mapping.h@@ -29,8 +29,6 @@ #include <asm/io.h> struct device; -extern int bad_dma_address; -#define DMA_ERROR_CODE bad_dma_address extern const struct dma_map_ops *dma_ops;
diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c
index e74b65009587..71269dc0f225 100644
--- a/arch/hexagon/kernel/dma.c
+++ b/arch/hexagon/kernel/dma.c@@ -25,11 +25,11 @@ #include <linux/module.h> #include <asm/page.h> +#define HEXAGON_MAPPING_ERROR 0 + const struct dma_map_ops *dma_ops; EXPORT_SYMBOL(dma_ops); -int bad_dma_address; /* globals are automatically initialized to zero */ - static inline void *dma_addr_to_virt(dma_addr_t dma_addr) { return phys_to_virt((unsigned long) dma_addr);
@@ -181,7 +181,7 @@ static dma_addr_t hexagon_map_page(struct device *dev, struct page *page, WARN_ON(size == 0); if (!check_addr("map_single", dev, bus, size)) - return bad_dma_address; + return HEXAGON_MAPPING_ERROR; if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) dma_sync(dma_addr_to_virt(bus), size, dir);
@@ -203,6 +203,11 @@ static void hexagon_sync_single_for_device(struct device *dev, dma_sync(dma_addr_to_virt(dma_handle), size, dir); } +static int hexagon_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return dma_addr == HEXAGON_MAPPING_ERROR; +} + const struct dma_map_ops hexagon_dma_ops = { .alloc = hexagon_dma_alloc_coherent, .free = hexagon_free_coherent,
@@ -210,6 +215,7 @@ const struct dma_map_ops hexagon_dma_ops = { .map_page = hexagon_map_page, .sync_single_for_cpu = hexagon_sync_single_for_cpu, .sync_single_for_device = hexagon_sync_single_for_device, + .mapping_error = hexagon_mapping_error; .is_phys = 1, };
diff --git a/arch/hexagon/kernel/hexagon_ksyms.c b/arch/hexagon/kernel/hexagon_ksyms.c
index 00bcad9cbd8f..aa248f595431 100644
--- a/arch/hexagon/kernel/hexagon_ksyms.c
+++ b/arch/hexagon/kernel/hexagon_ksyms.c@@ -40,7 +40,6 @@ EXPORT_SYMBOL(memset); /* Additional variables */ EXPORT_SYMBOL(__phys_offset); EXPORT_SYMBOL(_dflt_cache_att); -EXPORT_SYMBOL(bad_dma_address); #define DECLARE_EXPORT(name) \ extern void name(void); EXPORT_SYMBOL(name)
--
2.11.0