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    Subject[PATCH 4.14 27/80] ARM: davinci: da8xx: specify dma_coherent_mask for lcdc
    Date
    [ Upstream commit 68f2515bb31a664ba3e2bc1eb78dd9f529b10067 ]

    The lcdc device is missing the dma_coherent_mask definition causing the
    following warning on da850-evm:

    da8xx_lcdc da8xx_lcdc.0: found Sharp_LK043T1DG01 panel
    ------------[ cut here ]------------
    WARNING: CPU: 0 PID: 1 at kernel/dma/mapping.c:247 dma_alloc_attrs+0xc8/0x110
    Modules linked in:
    CPU: 0 PID: 1 Comm: swapper Not tainted 5.2.0-rc3-00077-g16d72dd4891f #18
    Hardware name: DaVinci DA850/OMAP-L138/AM18x EVM
    [<c000fce8>] (unwind_backtrace) from [<c000d900>] (show_stack+0x10/0x14)
    [<c000d900>] (show_stack) from [<c001a4f8>] (__warn+0xec/0x114)
    [<c001a4f8>] (__warn) from [<c001a634>] (warn_slowpath_null+0x3c/0x48)
    [<c001a634>] (warn_slowpath_null) from [<c0065860>] (dma_alloc_attrs+0xc8/0x110)
    [<c0065860>] (dma_alloc_attrs) from [<c02820f8>] (fb_probe+0x228/0x5a8)
    [<c02820f8>] (fb_probe) from [<c02d3e9c>] (platform_drv_probe+0x48/0x9c)
    [<c02d3e9c>] (platform_drv_probe) from [<c02d221c>] (really_probe+0x1d8/0x2d4)
    [<c02d221c>] (really_probe) from [<c02d2474>] (driver_probe_device+0x5c/0x168)
    [<c02d2474>] (driver_probe_device) from [<c02d2728>] (device_driver_attach+0x58/0x60)
    [<c02d2728>] (device_driver_attach) from [<c02d27b0>] (__driver_attach+0x80/0xbc)
    [<c02d27b0>] (__driver_attach) from [<c02d047c>] (bus_for_each_dev+0x64/0xb4)
    [<c02d047c>] (bus_for_each_dev) from [<c02d1590>] (bus_add_driver+0xe4/0x1d8)
    [<c02d1590>] (bus_add_driver) from [<c02d301c>] (driver_register+0x78/0x10c)
    [<c02d301c>] (driver_register) from [<c000a5c0>] (do_one_initcall+0x48/0x1bc)
    [<c000a5c0>] (do_one_initcall) from [<c05cae6c>] (kernel_init_freeable+0x10c/0x1d8)
    [<c05cae6c>] (kernel_init_freeable) from [<c048a000>] (kernel_init+0x8/0xf4)
    [<c048a000>] (kernel_init) from [<c00090e0>] (ret_from_fork+0x14/0x34)
    Exception stack(0xc6837fb0 to 0xc6837ff8)
    7fa0: 00000000 00000000 00000000 00000000
    7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    7fe0: 00000000 00000000 00000000 00000000 00000013 00000000
    ---[ end trace 8a8073511be81dd2 ]---

    Add a 32-bit mask to the platform device's definition.

    Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

    Signed-off-by: Sekhar Nori <nsekhar@ti.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm/mach-davinci/devices-da8xx.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
    index 22440c05d66a..7120f93eab0b 100644
    --- a/arch/arm/mach-davinci/devices-da8xx.c
    +++ b/arch/arm/mach-davinci/devices-da8xx.c
    @@ -699,6 +699,9 @@ static struct platform_device da8xx_lcdc_device = {
    .id = 0,
    .num_resources = ARRAY_SIZE(da8xx_lcdc_resources),
    .resource = da8xx_lcdc_resources,
    + .dev = {
    + .coherent_dma_mask = DMA_BIT_MASK(32),
    + }
    };

    int __init da8xx_register_lcdc(struct da8xx_lcdc_platform_data *pdata)
    --
    2.20.1


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