mirror of https://github.com/torvalds/linux.git
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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| .. | ||
| aty | ||
| core | ||
| exynos | ||
| geode | ||
| i810 | ||
| intelfb | ||
| kyro | ||
| matrox | ||
| mb862xx | ||
| mbx | ||
| mmp | ||
| nvidia | ||
| omap | ||
| omap2 | ||
| riva | ||
| savage | ||
| sis | ||
| vermilion | ||
| via | ||
| 68328fb.c | ||
| Kconfig | ||
| Makefile | ||
| acornfb.c | ||
| acornfb.h | ||
| amba-clcd-versatile.c | ||
| amba-clcd.c | ||
| amifb.c | ||
| arcfb.c | ||
| arkfb.c | ||
| asiliantfb.c | ||
| atafb.c | ||
| atafb.h | ||
| atafb_iplan2p2.c | ||
| atafb_iplan2p4.c | ||
| atafb_iplan2p8.c | ||
| atafb_mfb.c | ||
| atafb_utils.h | ||
| atmel_lcdfb.c | ||
| au1100fb.c | ||
| au1100fb.h | ||
| au1200fb.c | ||
| au1200fb.h | ||
| auo_k190x.c | ||
| auo_k190x.h | ||
| auo_k1900fb.c | ||
| auo_k1901fb.c | ||
| bf54x-lq043fb.c | ||
| bf537-lq035.c | ||
| bfin-lq035q1-fb.c | ||
| bfin-t350mcqb-fb.c | ||
| bfin_adv7393fb.c | ||
| bfin_adv7393fb.h | ||
| broadsheetfb.c | ||
| bt431.h | ||
| bt455.h | ||
| bw2.c | ||
| c2p.h | ||
| c2p_core.h | ||
| c2p_iplan2.c | ||
| c2p_planar.c | ||
| carminefb.c | ||
| carminefb.h | ||
| carminefb_regs.h | ||
| cg3.c | ||
| cg6.c | ||
| cg14.c | ||
| chipsfb.c | ||
| cirrusfb.c | ||
| clps711x-fb.c | ||
| clps711xfb.c | ||
| cobalt_lcdfb.c | ||
| controlfb.c | ||
| controlfb.h | ||
| cyber2000fb.c | ||
| cyber2000fb.h | ||
| da8xx-fb.c | ||
| dnfb.c | ||
| edid.h | ||
| efifb.c | ||
| ep93xx-fb.c | ||
| fb-puv3.c | ||
| ffb.c | ||
| fm2fb.c | ||
| fsl-diu-fb.c | ||
| g364fb.c | ||
| gbefb.c | ||
| goldfishfb.c | ||
| grvga.c | ||
| gxt4500.c | ||
| hecubafb.c | ||
| hgafb.c | ||
| hitfb.c | ||
| hpfb.c | ||
| hyperv_fb.c | ||
| i740_reg.h | ||
| i740fb.c | ||
| igafb.c | ||
| imsttfb.c | ||
| imxfb.c | ||
| jz4740_fb.c | ||
| leo.c | ||
| macfb.c | ||
| macmodes.c | ||
| macmodes.h | ||
| maxinefb.c | ||
| metronomefb.c | ||
| mx3fb.c | ||
| mxsfb.c | ||
| n411.c | ||
| neofb.c | ||
| nuc900fb.c | ||
| nuc900fb.h | ||
| ocfb.c | ||
| offb.c | ||
| p9100.c | ||
| platinumfb.c | ||
| platinumfb.h | ||
| pm2fb.c | ||
| pm3fb.c | ||
| pmag-aa-fb.c | ||
| pmag-ba-fb.c | ||
| pmagb-b-fb.c | ||
| ps3fb.c | ||
| pvr2fb.c | ||
| pxa3xx-gcu.c | ||
| pxa3xx-gcu.h | ||
| pxa168fb.c | ||
| pxa168fb.h | ||
| pxafb.c | ||
| pxafb.h | ||
| q40fb.c | ||
| s1d13xxxfb.c | ||
| s3c-fb.c | ||
| s3c2410fb.c | ||
| s3c2410fb.h | ||
| s3fb.c | ||
| sa1100fb.c | ||
| sa1100fb.h | ||
| sbuslib.c | ||
| sbuslib.h | ||
| sh7760fb.c | ||
| sh_mobile_lcdcfb.c | ||
| sh_mobile_lcdcfb.h | ||
| sh_mobile_meram.c | ||
| simplefb.c | ||
| skeletonfb.c | ||
| sm501fb.c | ||
| sm712.h | ||
| sm712fb.c | ||
| smscufx.c | ||
| ssd1307fb.c | ||
| sstfb.c | ||
| sticore.h | ||
| stifb.c | ||
| sunxvr500.c | ||
| sunxvr1000.c | ||
| sunxvr2500.c | ||
| tcx.c | ||
| tdfxfb.c | ||
| tgafb.c | ||
| tmiofb.c | ||
| tridentfb.c | ||
| udlfb.c | ||
| uvesafb.c | ||
| valkyriefb.c | ||
| valkyriefb.h | ||
| vesafb.c | ||
| vfb.c | ||
| vga16fb.c | ||
| vt8500lcdfb.c | ||
| vt8500lcdfb.h | ||
| vt8623fb.c | ||
| w100fb.c | ||
| w100fb.h | ||
| wm8505fb.c | ||
| wm8505fb_regs.h | ||
| wmt_ge_rops.c | ||
| wmt_ge_rops.h | ||
| xen-fbfront.c | ||
| xilinxfb.c | ||