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    Subject[patch -v2 17/23] acpi: use memory_read_from_buffer
    Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
    Cc: Len Brown <len.brown@intel.com>
    Cc: linux-acpi@vger.kernel.org
    ---
    drivers/acpi/system.c | 15 ++-------------
    1 file changed, 2 insertions(+), 13 deletions(-)

    Index: 2.6-git/drivers/acpi/system.c
    ===================================================================
    --- 2.6-git.orig/drivers/acpi/system.c
    +++ 2.6-git/drivers/acpi/system.c
    @@ -77,7 +77,6 @@ static ssize_t acpi_table_show(struct ko
    container_of(bin_attr, struct acpi_table_attr, attr);
    struct acpi_table_header *table_header = NULL;
    acpi_status status;
    - ssize_t ret_count = count;

    status =
    acpi_get_table(table_attr->name, table_attr->instance,
    @@ -85,18 +84,8 @@ static ssize_t acpi_table_show(struct ko
    if (ACPI_FAILURE(status))
    return -ENODEV;

    - if (offset >= table_header->length) {
    - ret_count = 0;
    - goto end;
    - }
    -
    - if (offset + ret_count > table_header->length)
    - ret_count = table_header->length - offset;
    -
    - memcpy(buf, ((char *)table_header) + offset, ret_count);
    -
    - end:
    - return ret_count;
    + return memory_read_from_buffer(buf, count, &offset,
    + table_header, table_header->length);
    }

    static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
    --


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