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    Subject[PATCH 14/34] dma/congiguous: avoid warning about unused size_bytes
    Date
    From: Arnd Bergmann <arnd@arndb.de>

    When building with W=1, this variable is unused for configs with
    CONFIG_CMA_SIZE_SEL_PERCENTAGE=y:

    kernel/dma/contiguous.c:67:26: error: 'size_bytes' defined but not used [-Werror=unused-const-variable=]

    Mark it as __maybe_unused to avoid the warning without adding more
    ifdef checks to this file.

    Fixes: c64be2bb1c6e ("drivers: add Contiguous Memory Allocator")
    Signed-off-by: Arnd Bergmann <arnd@arndb.de>
    ---
    kernel/dma/contiguous.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
    index 055da410ac71..c53f4f633f7f 100644
    --- a/kernel/dma/contiguous.c
    +++ b/kernel/dma/contiguous.c
    @@ -64,7 +64,7 @@ struct cma *dma_contiguous_default_area;
    * Users, who want to set the size of global CMA area for their system
    * should use cma= kernel parameter.
    */
    -static const phys_addr_t size_bytes __initconst =
    +static const phys_addr_t size_bytes __initconst __maybe_unused =
    (phys_addr_t)CMA_SIZE_MBYTES * SZ_1M;
    static phys_addr_t size_cmdline __initdata = -1;
    static phys_addr_t base_cmdline __initdata;
    --
    2.39.2

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