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    Subject[PATCH 5.4 041/355] hyperv/vmbus: include linux/bitops.h
    Date
    From: Arnd Bergmann <arnd@arndb.de>

    [ Upstream commit 8017c99680fa65e1e8d999df1583de476a187830 ]

    On arm64 randconfig builds, hyperv sometimes fails with this
    error:

    In file included from drivers/hv/hv_trace.c:3:
    In file included from drivers/hv/hyperv_vmbus.h:16:
    In file included from arch/arm64/include/asm/sync_bitops.h:5:
    arch/arm64/include/asm/bitops.h:11:2: error: only <linux/bitops.h> can be included directly
    In file included from include/asm-generic/bitops/hweight.h:5:
    include/asm-generic/bitops/arch_hweight.h:9:9: error: implicit declaration of function '__sw_hweight32' [-Werror,-Wimplicit-function-declaration]
    include/asm-generic/bitops/atomic.h:17:7: error: implicit declaration of function 'BIT_WORD' [-Werror,-Wimplicit-function-declaration]

    Include the correct header first.

    Signed-off-by: Arnd Bergmann <arnd@arndb.de>
    Link: https://lore.kernel.org/r/20211018131929.2260087-1-arnd@kernel.org
    Signed-off-by: Wei Liu <wei.liu@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/hv/hyperv_vmbus.h | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
    index cabcb66e7c5ef..356382a340b2c 100644
    --- a/drivers/hv/hyperv_vmbus.h
    +++ b/drivers/hv/hyperv_vmbus.h
    @@ -13,6 +13,7 @@
    #define _HYPERV_VMBUS_H

    #include <linux/list.h>
    +#include <linux/bitops.h>
    #include <asm/sync_bitops.h>
    #include <asm/hyperv-tlfs.h>
    #include <linux/atomic.h>
    --
    2.33.0


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