linux/arch/mn10300/mm
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>
2016-08-04 08:50:07 -04:00
..
cache-dbg-flush-by-reg.S MN10300: Fix one of the kernel debugger cacheflush variants 2011-06-07 19:03:52 -07:00
cache-dbg-flush-by-tag.S MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
cache-dbg-inv-by-reg.S MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
cache-dbg-inv-by-tag.S MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
cache-dbg-inv.S MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
cache-disabled.c MN10300: Handle missing sys_cacheflush() when caching disabled 2010-09-28 18:01:14 -07:00
cache-flush-by-reg.S MN10300: AM34: Add cacheflushing by using the AM34 purge registers 2010-10-27 17:28:45 +01:00
cache-flush-by-tag.S MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
cache-flush-icache.c MN10300: Cache: Implement SMP global cache flushing 2010-10-27 17:28:47 +01:00
cache-inv-by-reg.S MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
cache-inv-by-tag.S MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
cache-inv-icache.c MN10300: The SMP_ICACHE_INV_FLUSH_RANGE IPI command does not exist 2011-03-14 14:45:29 +00:00
cache-smp-flush.c MN10300: Cache: Implement SMP global cache flushing 2010-10-27 17:28:47 +01:00
cache-smp-inv.c MN10300: Cache: Implement SMP global cache flushing 2010-10-27 17:28:47 +01:00
cache-smp.c mn10300: convert old cpumask API into new one 2011-05-25 08:39:39 -07:00
cache-smp.h MN10300: Cache: Implement SMP global cache flushing 2010-10-27 17:28:47 +01:00
cache.c MN10300: Cache: Implement SMP global cache flushing 2010-10-27 17:28:47 +01:00
cache.inc MN10300: The icache invalidate functions should disable the icache first 2011-03-18 16:54:29 +00:00
dma-alloc.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
extable.c mn10300: add the MN10300/AM33 architecture to the kernel 2008-02-08 09:22:30 -08:00
fault.c mm: do not pass mm_struct into handle_mm_fault 2016-07-26 16:19:19 -07:00
init.c mm/mn10300: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:37 -07:00
Kconfig.cache MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
Makefile MN10300: Create general kernel debugger cache flushing 2011-03-18 16:54:30 +00:00
misalignment.c Disintegrate asm/system.h for MN10300 2012-03-28 18:30:02 +01:00
mmu-context.c MN10300: Make the use of PIDR to mark TLB entries controllable 2010-10-27 17:28:49 +01:00
pgtable.c tree wide: get rid of __GFP_REPEAT for order-0 allocations part I 2016-06-24 17:23:52 -07:00
tlb-mn10300.S MN10300: Use the [ID]PTEL2 registers rather than [ID]PTEL for TLB control 2010-10-27 17:28:50 +01:00
tlb-smp.c atomic: Replace atomic_{set,clear}_mask() usage 2015-07-27 14:06:24 +02:00