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    Subject[PATCH] ACPI: apei: Cast u64 to unsigned long, fix compile warning
    In today linux-net I got a compile warning in acpi/apei

    drivers/acpi/apei/erst.c: In function ‘erst_exec_move_data’:
    drivers/acpi/apei/erst.c:273: warning: cast to pointer from integer of different size
    drivers/acpi/apei/erst.c:274: warning: cast to pointer from integer of different size

    The problem is that apei_exec_context->dst_base type is u64.
    But in 32 bits architecture void * is 32 bits long.
    Casting it to unsigned long solves the issue

    Signed-off-by: Javier Martinez Canillas <>
    drivers/acpi/apei/erst.c | 4 ++--
    1 files changed, 2 insertions(+), 2 deletions(-)

    diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
    index a4904f1..37d7a05 100644
    --- a/drivers/acpi/apei/erst.c
    +++ b/drivers/acpi/apei/erst.c
    @@ -270,8 +270,8 @@ static int erst_exec_move_data(struct apei_exec_context *ctx,
    rc = __apei_exec_read_register(entry, &offset);
    if (rc)
    return rc;
    - memmove((void *)ctx->dst_base + offset,
    - (void *)ctx->src_base + offset,
    + memmove((void *)(unsigned long)ctx->dst_base + offset,
    + (void *)(unsigned long)ctx->src_base + offset,

    return 0;

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      Last update: 2010-09-12 15:51    [W:0.021 / U:6.116 seconds]
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