linux_dsm_epyc7002/drivers/gpu/drm/rockchip
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
..
analogix_dp-rockchip.c drm/rockchip: analogix_dp: add missing clk_disable_unprepare() on error 2016-07-19 16:36:48 -04:00
dw_hdmi-rockchip.c drm/rockchip: dw_hdmi: remove unused #include 2016-07-19 09:42:18 +08:00
dw-mipi-dsi.c drm: rockchip: Rely on the default ->best_encoder() behavior 2016-06-10 17:24:37 +02:00
inno_hdmi.c drm: rockchip: Rely on the default ->best_encoder() behavior 2016-06-10 17:24:37 +02:00
inno_hdmi.h drm/rockchip: hdmi: add Innosilicon HDMI support 2016-02-18 13:56:43 +08:00
Kconfig drm/rockchip: make fbdev support really optional 2016-07-15 10:28:20 -04:00
Makefile drm: rockchip: dp: add rockchip platform dp driver 2016-04-05 10:13:04 +08:00
rockchip_drm_drv.c drm/rockchip: fix a couple off by one bugs 2016-07-19 09:42:39 +08:00
rockchip_drm_drv.h drm/rockchip: Use atomic PM helpers 2016-06-10 17:13:19 +02:00
rockchip_drm_fb.c drm/rockchip: Delete an unnecessary check before drm_gem_object_unreference_unlocked() 2016-07-19 10:02:30 +08:00
rockchip_drm_fb.h drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
rockchip_drm_fbdev.c drm/rockchip: Disarm vop->is_enabled 2016-06-10 17:11:18 +02:00
rockchip_drm_fbdev.h drm/rockchip: respect CONFIG_DRM_FBDEV_EMULATION 2016-01-22 08:45:31 +08:00
rockchip_drm_gem.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
rockchip_drm_gem.h dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
rockchip_drm_vop.c drm/rockchip: allocate correct crtc state structure on reset 2016-07-19 14:01:53 +08:00
rockchip_drm_vop.h drm/rockchip: vop: spilt scale regsters 2015-12-28 09:01:41 +08:00
rockchip_vop_reg.c drm/rockchip: vop: correct rk3036 register define 2016-07-19 09:42:21 +08:00
rockchip_vop_reg.h drm/rockchip: vop: add rk3036 vop support 2015-12-28 09:01:48 +08:00