Commit 46a21e46 authored by Akinobu Mita's avatar Akinobu Mita Committed by Len Brown
Browse files

ACPI: use memory_read_from_buffer() 



Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Acked-by: default avatarZhang Rui <rui.zhang@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 7efd52a4

drivers/acpi/system.c

+2 −13
Original line number Diff line number Diff line
@@ -77,7 +77,6 @@ static ssize_t acpi_table_show(struct kobject *kobj, 
	    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 kobject *kobj, 
	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,