linux/arch/microblaze/kernel
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
..
cpu microblaze: Add missing release version code 2015-06-08 09:57:07 +02:00
.gitignore microblaze: Add .gitignore entries for auto-generated files 2013-02-12 11:24:44 +01:00
Makefile microblaze: Remove unused prom_parse.c 2015-01-05 12:36:41 +01:00
asm-offsets.c microblaze: Remove "cache" optimized copy_page function 2010-05-06 11:21:58 +02:00
dma.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
early_printk.c early_printk: consolidate random copies of identical code 2013-04-29 18:28:13 -07:00
entry-nommu.S microblaze: fix handling of multiple pending signals 2013-02-03 18:16:02 -05:00
entry.S microblaze: Fix syscall error recovery for invalid syscall IDs 2015-03-04 15:12:27 +01:00
exceptions.c microblaze: Do not use module.h in files which are not modules 2013-02-12 11:24:45 +01:00
ftrace.c microblaze: ftrace: Add call to ftrace_graph_is_dead() in function graph code 2014-07-18 13:55:45 -04:00
head.S microblaze: Fix typo in head.S s/substract/subtract/ 2014-06-05 13:02:02 +02:00
heartbeat.c microblaze: Rename global function heartbeat() 2014-03-12 10:10:06 +01:00
hw_exception_handler.S microblaze: Fix compilation error for BS=0 2014-01-27 11:26:33 +01:00
intc.c microblaze/irq: prepare for drivers/irqchip/irqchip.h removal 2015-07-31 20:51:21 +02:00
irq.c microblaze: intc: Using irqchip 2013-09-03 11:24:48 +02:00
kgdb.c microblaze: Label local function static 2015-06-08 09:57:08 +02:00
mcount.S microblaze: ftrace: Remove check of obsolete variable function_trace_stop 2014-07-18 13:57:08 -04:00
microblaze_ksyms.c microblaze: Do not use module.h in files which are not modules 2013-02-12 11:24:45 +01:00
misc.S microblaze: Handle TLB skip size dynamically 2012-03-23 09:28:19 +01:00
module.c microblaze: Do not use module.h in files which are not modules 2013-02-12 11:24:45 +01:00
platform.c microblaze: Remove platform folder 2014-04-07 13:45:21 +02:00
process.c microblaze: Fix sparse warning because of missing cpu.h header 2014-04-07 13:45:17 +02:00
prom.c of/fdt: create common debugfs 2014-04-30 00:59:16 -05:00
ptrace.c microblaze: Use unsigned return type in do_syscall_trace_enter 2015-01-05 12:36:43 +01:00
reset.c microblaze: Remove unused prom header from reset.c 2015-01-05 12:36:42 +01:00
setup.c locking/lockdep: Eliminate lockdep_init() 2016-02-09 12:03:25 +01:00
signal.c Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc 2015-04-15 13:53:55 -07:00
stacktrace.c microblaze: Do not use module.h in files which are not modules 2013-02-12 11:24:45 +01:00
sys_microblaze.c microblaze: Fix bug with mmap2 syscall MB implementation 2013-11-08 15:20:44 +01:00
syscall_table.S microblaze: Wire up userfaultfd, membarrier, mlock2 syscalls 2016-05-16 09:18:01 +02:00
timer.c clocksources: Switch back to the clksrc table 2016-06-28 10:19:35 +02:00
traps.c dump_stack: consolidate dump_stack() implementations and unify their behaviors 2013-04-30 17:04:02 -07:00
unwind.c microblaze: Mark get_frame_size as static 2015-01-05 12:36:44 +01:00
vmlinux.lds.S arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections 2016-03-25 16:37:42 -07:00