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ACPI: use memory_read_from_buffer()

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Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Akinobu Mita 2008-06-09 16:22:26 -07:00 • committed by Len Brown
parent 7efd52a407
commit 46a21e465e
1 changed files with 2 additions and 13 deletions
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15
drivers/acpi/system.c
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@ -77,7 +77,6 @@ static ssize_t acpi_table_show(struct kobject *kobj,
container_of(bin_attr, struct acpi_table_attr, attr); container_of(bin_attr, struct acpi_table_attr, attr);
struct acpi_table_header *table_header = NULL; struct acpi_table_header *table_header = NULL;
acpi_status status; acpi_status status;
ssize_t ret_count = count;
status = status =
acpi_get_table(table_attr->name, table_attr->instance, 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)) if (ACPI_FAILURE(status))
return -ENODEV; return -ENODEV;
if (offset >= table_header->length) { return memory_read_from_buffer(buf, count, &offset,
ret_count = 0; table_header, table_header->length);
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;
} }
static void acpi_table_attr_init(struct acpi_table_attr *table_attr, static void acpi_table_attr_init(struct acpi_table_attr *table_attr,