diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0444-dma-direct-exclude-dma_direct_map_resource-from-the-.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0444-dma-direct-exclude-dma_direct_map_resource-from-the-.patch | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0444-dma-direct-exclude-dma_direct_map_resource-from-the-.patch b/target/linux/bcm27xx/patches-5.4/950-0444-dma-direct-exclude-dma_direct_map_resource-from-the-.patch deleted file mode 100644 index 2534b71b73..0000000000 --- a/target/linux/bcm27xx/patches-5.4/950-0444-dma-direct-exclude-dma_direct_map_resource-from-the-.patch +++ /dev/null @@ -1,115 +0,0 @@ -From b763f24aed409296eb76d085c279b2c40462f8a1 Mon Sep 17 00:00:00 2001 -From: Christoph Hellwig <hch@lst.de> -Date: Tue, 19 Nov 2019 17:38:58 +0100 -Subject: [PATCH] dma-direct: exclude dma_direct_map_resource from the - min_low_pfn check - -commit 68a33b1794665ba8a1d1ef1d3bfcc7c587d380a6 upstream. - -The valid memory address check in dma_capable only makes sense when mapping -normal memory, not when using dma_map_resource to map a device resource. -Add a new boolean argument to dma_capable to exclude that check for the -dma_map_resource case. - -Fixes: b12d66278dd6 ("dma-direct: check for overflows on 32 bit DMA addresses") -Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> -Signed-off-by: Christoph Hellwig <hch@lst.de> -Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> -Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> ---- - arch/x86/kernel/amd_gart_64.c | 4 ++-- - drivers/xen/swiotlb-xen.c | 4 ++-- - include/linux/dma-direct.h | 5 +++-- - kernel/dma/direct.c | 4 ++-- - kernel/dma/swiotlb.c | 2 +- - 5 files changed, 10 insertions(+), 9 deletions(-) - ---- a/arch/x86/kernel/amd_gart_64.c -+++ b/arch/x86/kernel/amd_gart_64.c -@@ -185,13 +185,13 @@ static void iommu_full(struct device *de - static inline int - need_iommu(struct device *dev, unsigned long addr, size_t size) - { -- return force_iommu || !dma_capable(dev, addr, size); -+ return force_iommu || !dma_capable(dev, addr, size, true); - } - - static inline int - nonforced_iommu(struct device *dev, unsigned long addr, size_t size) - { -- return !dma_capable(dev, addr, size); -+ return !dma_capable(dev, addr, size, true); - } - - /* Map a single continuous physical area into the IOMMU. ---- a/drivers/xen/swiotlb-xen.c -+++ b/drivers/xen/swiotlb-xen.c -@@ -381,7 +381,7 @@ static dma_addr_t xen_swiotlb_map_page(s - * we can safely return the device addr and not worry about bounce - * buffering it. - */ -- if (dma_capable(dev, dev_addr, size) && -+ if (dma_capable(dev, dev_addr, size, true) && - !range_straddles_page_boundary(phys, size) && - !xen_arch_need_swiotlb(dev, phys, dev_addr) && - swiotlb_force != SWIOTLB_FORCE) -@@ -403,7 +403,7 @@ static dma_addr_t xen_swiotlb_map_page(s - /* - * Ensure that the address returned is DMA'ble - */ -- if (unlikely(!dma_capable(dev, dev_addr, size))) { -+ if (unlikely(!dma_capable(dev, dev_addr, size, true))) { - swiotlb_tbl_unmap_single(dev, map, size, size, dir, - attrs | DMA_ATTR_SKIP_CPU_SYNC); - return DMA_MAPPING_ERROR; ---- a/include/linux/dma-direct.h -+++ b/include/linux/dma-direct.h -@@ -51,14 +51,15 @@ static inline phys_addr_t dma_to_phys(st - return __sme_clr(__dma_to_phys(dev, daddr)); - } - --static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) -+static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size, -+ bool is_ram) - { - dma_addr_t end = addr + size - 1; - - if (!dev->dma_mask) - return false; - -- if (!IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && -+ if (is_ram && !IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && - min(addr, end) < phys_to_dma(dev, PFN_PHYS(min_low_pfn))) - return false; - ---- a/kernel/dma/direct.c -+++ b/kernel/dma/direct.c -@@ -326,7 +326,7 @@ static inline bool dma_direct_possible(s - size_t size) - { - return swiotlb_force != SWIOTLB_FORCE && -- dma_capable(dev, dma_addr, size); -+ dma_capable(dev, dma_addr, size, true); - } - - dma_addr_t dma_direct_map_page(struct device *dev, struct page *page, -@@ -375,7 +375,7 @@ dma_addr_t dma_direct_map_resource(struc - { - dma_addr_t dma_addr = paddr; - -- if (unlikely(!dma_capable(dev, dma_addr, size))) { -+ if (unlikely(!dma_capable(dev, dma_addr, size, false))) { - report_addr(dev, dma_addr, size); - return DMA_MAPPING_ERROR; - } ---- a/kernel/dma/swiotlb.c -+++ b/kernel/dma/swiotlb.c -@@ -682,7 +682,7 @@ bool swiotlb_map(struct device *dev, phy - - /* Ensure that the address returned is DMA'ble */ - *dma_addr = __phys_to_dma(dev, *phys); -- if (unlikely(!dma_capable(dev, *dma_addr, size))) { -+ if (unlikely(!dma_capable(dev, *dma_addr, size, true))) { - swiotlb_tbl_unmap_single(dev, *phys, size, size, dir, - attrs | DMA_ATTR_SKIP_CPU_SYNC); - return false; |