linux/arch/powerpc/platforms/pseries
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
..
Kconfig powerpc/pseries: Drop always true CONFIG_PSERIES_MSI 2015-10-15 20:31:56 +11:00
Makefile powerpc/pseries: Drop always true CONFIG_PSERIES_MSI 2015-10-15 20:31:56 +11:00
cmm.c powerpc/pseries: Fix error return value in cmm_mem_going_offline() 2016-07-05 23:58:52 +10:00
dlpar.c powerpc/pseries: Use kernel hotplug queue for PowerVM hotplug events 2016-07-19 20:12:31 +10:00
dtl.c powerpc: Replace __get_cpu_var uses 2014-11-03 12:12:32 +11:00
eeh_pseries.c powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
event_sources.c powerpc/pseries: Remove MPIC from pseries event sources 2016-06-14 13:58:27 +10:00
firmware.c powerpc: Move FW feature probing out of pseries probe() 2016-07-21 18:56:13 +10:00
hotplug-cpu.c powerpc/pseries: Remove MPIC from pseries cpu hotplug 2016-06-14 13:58:27 +10:00
hotplug-memory.c powerpc/pseries: Remove call to memblock_add() 2016-07-15 20:18:37 +10:00
hvCall.S powerpc, jump_label: Include linux/jump_label.h to get HAVE_JUMP_LABEL define 2015-04-09 09:40:29 +02:00
hvCall_inst.c powerpc: Replace __get_cpu_var uses 2014-11-03 12:12:32 +11:00
hvconsole.c powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
hvcserver.c powerpc/pseries/hvcserver: don't memset pi_buff if it is null 2015-10-09 08:03:03 +11:00
io_event_irq.c powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
iommu.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
kexec.c powerpc/pseries: Remove MPIC from pseries kexec 2016-06-14 13:58:27 +10:00
lpar.c powerpc/mm: Rename hpte_init_lpar() and move the fallback to a header 2016-07-26 14:16:18 +10:00
lparcfg.c powerpc/mm/radix: Isolate hash table function from pseries guest code 2016-05-11 21:53:46 +10:00
mobility.c powerpc: Update of_remove_property() call sites to remove null checking 2016-05-11 21:54:04 +10:00
msi.c powerpc/pci: Export pci_traverse_device_nodes() 2016-05-11 21:54:25 +10:00
nvram.c powerpc/pseries: Remove unused pstore headers in nvram.c 2016-06-14 16:05:35 +10:00
of_helpers.c powerpc/pseries: Correct string length in pseries_of_derive_parent() 2015-10-28 12:08:18 +09:00
of_helpers.h powerpc/pseries: extract of_helpers module 2015-10-05 21:11:24 +11:00
offline_states.h powerpc/smp: soft-replugged CPUs must go back to start_secondary 2011-04-01 15:37:09 +11:00
pci.c powerpc/pseries: Quieten ibm,pcie-link-speed-stats warning 2014-11-10 09:59:33 +11:00
pci_dlpar.c powerpc/pci: Move pci_find_bus_by_node() around 2016-05-11 21:54:24 +10:00
power.c powerpc/sparse: Include headers containing prototypes 2016-06-16 22:40:19 +10:00
pseries.h powerpc: Move FW feature probing out of pseries probe() 2016-07-21 18:56:13 +10:00
pseries_energy.c powerpc/sparse: make some things static 2016-06-16 22:23:11 +10:00
ras.c powerpc/pseries: Add support for hotplug interrupt source 2016-07-19 20:12:30 +10:00
reconfig.c powerpc: Update of_remove_property() call sites to remove null checking 2016-05-11 21:54:04 +10:00
rng.c powerpc: Use hardware RNG for arch_get_random_seed_* not arch_get_random_* 2015-07-23 19:52:03 +10:00
scanlog.c ppc: Clean up scanlog 2013-05-01 17:29:45 -04:00
setup.c powerpc: Get rid of ppc_md.init_early() 2016-07-21 19:07:26 +10:00
smp.c powerpc/pseries: Remove MPIC from pseries smp 2016-06-14 13:58:26 +10:00
suspend.c powerpc/pseries: Switch pseries drivers to use machine_xxx_initcall() 2014-07-28 14:11:26 +10:00