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    Subject[PATCH v9 2/7] x86/dma: use IS_ENABLED() to simplify the code
    Date
    Remove the ifdefs around CONFIG_IOMMU_DEFAULT_PASSTHROUGH to improve
    readablity.

    Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
    ---
    arch/x86/kernel/pci-dma.c | 6 +-----
    1 file changed, 1 insertion(+), 5 deletions(-)

    diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
    index dcd272dbd0a9330..8c82b2e28a0fe2d 100644
    --- a/arch/x86/kernel/pci-dma.c
    +++ b/arch/x86/kernel/pci-dma.c
    @@ -43,11 +43,7 @@
    * It is also possible to disable by default in kernel config, and enable with
    * iommu=nopt at boot time.
    */
    -#ifdef CONFIG_IOMMU_DEFAULT_PASSTHROUGH
    -int iommu_pass_through __read_mostly = 1;
    -#else
    -int iommu_pass_through __read_mostly;
    -#endif
    +int iommu_pass_through __read_mostly = IS_ENABLED(CONFIG_IOMMU_DEFAULT_PASSTHROUGH);

    extern struct iommu_table_entry __iommu_table[], __iommu_table_end[];

    --
    1.8.3

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