linux

History

Krzysztof Kozlowski 00085f1efa dma-mapping: use unsigned long for dma_attrs The dma-mapping core and the implementations do not change the DMA attributes passed by pointer. Thus the pointer can point to const data. However the attributes do not have to be a bitfield. Instead unsigned long will do fine: 1. This is just simpler. Both in terms of reading the code and setting attributes. Instead of initializing local attributes on the stack and passing pointer to it to dma_set_attr(), just set the bits. 2. It brings safeness and checking for const correctness because the attributes are passed by value. Semantic patches for this change (at least most of them): virtual patch virtual context @r@ identifier f, attrs; @@ f(..., - struct dma_attrs attrs + unsigned long attrs , ...) { ... } @@ identifier r.f; @@ f(..., - NULL + 0 ) and // Options: --all-includes virtual patch virtual context @r@ identifier f, attrs; type t; @@ t f(..., struct dma_attrs attrs); @@ identifier r.f; @@ f(..., - NULL + 0 ) Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Acked-by: Mark Salter <msalter@redhat.com> [c6x] Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> [cris] Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> [drm] Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Acked-by: Joerg Roedel <jroedel@suse.de> [iommu] Acked-by: Fabien Dessenne <fabien.dessenne@st.com> [bdisp] Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> [vb2-core] Acked-by: David Vrabel <david.vrabel@citrix.com> [xen] Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen swiotlb] Acked-by: Joerg Roedel <jroedel@suse.de> [iommu] Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon] Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [s390] Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> [avr32] Acked-by: Vineet Gupta <vgupta@synopsys.com> [arc] Acked-by: Robin Murphy <robin.murphy@arm.com> [arm64 and dma-iommu] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		7 years ago
..
Kconfig	unicore32 core architecture: mm related: generic codes	12 years ago
Makefile	unicore32: replace unicore32-specific iomap functions with generic lib implementation	12 years ago
alignment.c	arch/unicore32/mm/alignment.c: include "asm/pgtable.h" to avoid compiling error	9 years ago
cache-ucv2.S	unicore32 core architecture: mm related: consistent device DMA handling	12 years ago
dma-swiotlb.c	dma-mapping: use unsigned long for dma_attrs	7 years ago
extable.c	unicore32 core architecture: mm related: fault handling	12 years ago
fault.c	mm: do not pass mm_struct into handle_mm_fault	7 years ago
flush.c	Disintegrate asm/system.h for Unicore32 [based on ver #3 , changed by gxt]	11 years ago
init.c	mm, show_mem: remove SHOW_MEM_FILTER_PAGE_COUNT	9 years ago
ioremap.c	arch/unicore32/mm/ioremap.c: return NULL on invalid pfn	9 years ago
mm.h	Disintegrate asm/system.h for Unicore32 [based on ver #3 , changed by gxt]	11 years ago
mmu.c	reboot: unicore32: prepare reboot_mode for moving to generic kernel code	10 years ago
pgd.c	mm: cleanup pte_alloc interfaces	7 years ago
proc-macros.S	…
proc-syms.c	arch: unicore32: ksyms: export '__cpuc_coherent_kern_range' to avoid compiling failure	9 years ago
proc-ucv2.S	…
tlb-ucv2.S	unicore32 core architecture: mm related: consistent device DMA handling	12 years ago