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https://github.com/torvalds/linux
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00085f1efa
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> |
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.. | ||
ge | ||
xics | ||
6xx-suspend.S | ||
axonram.c | ||
cpm1.c | ||
cpm2.c | ||
cpm2_pic.c | ||
cpm2_pic.h | ||
cpm_common.c | ||
dart.h | ||
dart_iommu.c | ||
dcr-low.S | ||
dcr.c | ||
ehv_pic.c | ||
fsl_85xx_cache_ctlr.h | ||
fsl_85xx_cache_sram.c | ||
fsl_85xx_l2ctlr.c | ||
fsl_gtm.c | ||
fsl_lbc.c | ||
fsl_mpic_err.c | ||
fsl_mpic_timer_wakeup.c | ||
fsl_msi.c | ||
fsl_msi.h | ||
fsl_pci.c | ||
fsl_pci.h | ||
fsl_pmc.c | ||
fsl_rcpm.c | ||
fsl_rio.c | ||
fsl_rio.h | ||
fsl_rmu.c | ||
fsl_soc.c | ||
fsl_soc.h | ||
grackle.c | ||
i8259.c | ||
indirect_pci.c | ||
ipic.c | ||
ipic.h | ||
Kconfig | ||
Makefile | ||
micropatch.c | ||
mmio_nvram.c | ||
mpc5xxx_clocks.c | ||
mpc8xx_pic.c | ||
mpc8xx_pic.h | ||
mpic.c | ||
mpic.h | ||
mpic_msgr.c | ||
mpic_msi.c | ||
mpic_timer.c | ||
mpic_u3msi.c | ||
msi_bitmap.c | ||
mv64x60.h | ||
mv64x60_dev.c | ||
mv64x60_pci.c | ||
mv64x60_pic.c | ||
mv64x60_udbg.c | ||
of_rtc.c | ||
pmi.c | ||
ppc4xx_cpm.c | ||
ppc4xx_gpio.c | ||
ppc4xx_hsta_msi.c | ||
ppc4xx_msi.c | ||
ppc4xx_ocm.c | ||
ppc4xx_pci.c | ||
ppc4xx_pci.h | ||
ppc4xx_soc.c | ||
rtc_cmos_setup.c | ||
scom.c | ||
simple_gpio.c | ||
simple_gpio.h | ||
tsi108_dev.c | ||
tsi108_pci.c | ||
udbg_memcons.c | ||
uic.c | ||
xilinx_intc.c | ||
xilinx_pci.c |